Xavi challenged Barcelona to match "the best [Manchester] United in recent years" on Thursday and show they too are ready to be contenders again.
Barca and United, who drew 2-2 at Camp Nou in last week's first leg, are two of Europe's biggest clubs but are meeting in a Europa League knockout round play-off.
For both, however, there is optimism they may be able to return to former glories in the near future.
United will follow up the match at Old Trafford by playing for their first trophy in six years in the EFL Cup final, while a Premier League title may also yet be within reach.
Barca are eight points clear at the top of LaLiga, meanwhile, but coach Xavi believes their display at United will go a long way to proving their credentials.
"First of all, it's a very difficult match," he said. "At the moment, Manchester United is one of the best teams in Europe, the best United in recent years, and they're showing it.
"It's a good job by [Erik] Ten Hag. They have mentality, rhythm, passion, they showed it at Camp Nou, and we have to match them.
"We have to have personality and a lot of intensity, as well as the mentality of beating a big team in Europe. It's the perfect scene.
"United can say that they are back, but it is the stage to show that Barca can also compete.
"We'll see tomorrow if we've changed [since exiting the Champions League]. We'll see if we're up to the Europa League; we weren't [up to it] in the Champions League.
"We competed very well at home, but we cannot say that we are back, not at the moment. Tomorrow is an opportunity to do it."
Jules Kounde also appeared before the media and was asked if Barca, who lost three Champions League group games but have been beaten only once in LaLiga, feel more pressure playing in Europe.
"Yes," he replied, "but we all like it. It's positive pressure, everyone likes it. I have a lot of confidence in the team."
Xavi is prepared to take on that burden, adding: "I tell them the pressure is for me as a coach.
"I would give anything to play this game. Everyone would want to play in this environment. But I tell them to be calm and control their emotions."
Liverpool offer 'difficult to ignore', says Klopp's replacement Slot
Arne Slot said it was "not an easy decision" to leave Feyenoord, but ultimately he could not turn down the Liverpool job.
Liverpool finally confirmed Slot as Jurgen Klopp's successor on Monday.
Klopp signed off on his nine-year tenure in charge of Liverpool with a 2-0 win over Wolves on Sunday.
The German started an "Arne Slot" chant during his leaving speech at Anfield, and a day later, the Reds officially announced the 45-year-old Dutchman's appointment, subject to a work permit.
Slot led Feyenoord to the Eredivisie title during his time in charge, as well as the KNVB Beker, while they also reached the Europa Conference League final in 2022.
Speaking to Feyenoord's official website, Slot said: "It is certainly not an easy decision to close the door behind you at a club where you have experienced so many wonderful moments and worked successfully with so many wonderful people.
"But as a sportsman, an opportunity to become a head coach in the Premier League, at one of the biggest clubs in the world, is difficult to ignore.
"At the same time, we understand very well that working at a club like Liverpool is a special and unique opportunity for him. With that in mind, we started the conversation to see if we could find a solution together, and in the end we succeeded."
Feyenoord beat Excelsior in Feyenoord's final match in charge on Sunday.
Atalanta v Bayer Leverkusen: Will Alonso's Invincibles complete second leg of treble?
Back in 2001-02, Bayer Leverkusen earned the unwanted moniker of 'Neverkusen' as they saw a potential treble unravel in the space of 11 traumatic days, finishing as runners-up in the Bundesliga, Champions League and DFB-Pokal.
Twenty-two years later, Xabi Alonso's Werkself have already gone some way to banishing those ghosts by making Bundesliga history, Saturday's 2-1 win over Augsburg completing their unbeaten title-winning campaign.
This week, they have a chance to make it an unbeaten treble, heading to Dublin for Wednesday's Europa League final before taking on Kaiserslautern in the DFB-Pokal on Saturday.
Looking to deny Bayer one of the greatest achievements in recent memory are Atalanta, participating in their first European final following a memorable run that included a stunning quarter-final elimination of Liverpool.
Ahead of the first of 2023-24's European finals, here's the key storylines and Opta facts surrounding the two contenders.
One down, two to go
Wednesday's game offers Bayer the chance to complete the second leg of an unbeaten treble.
On Saturday, they became the first team in Bundesliga history to enjoy an unbeaten season, while only Arsenal (in 2003-04) and Juventus (2011-12) had previously achieved the feat in Europe's top five leagues this century.
Leverkusen are still unbeaten in 51 games in all competitions this season (42 wins, nine draws), with 12 of those coming in the Europa League (nine wins, three draws).
Three sides have previously won the competition without losing a game, with each of those triumphs coming within the last five editions – Chelsea in 2018-19, Villarreal in 2020-21 and Eintracht Frankfurt in 2021-22.
Wednesday's match will be the third major European final in Leverkusen's history, with Bayer beating Espanyol in a two-legged UEFA Cup final in 1988 and losing 2-1 to a Zinedine Zidane-inspired Real Madrid in the 2002 Champions League showpiece.
Alonso has taken Germany and Europe by storm with his brand of progressive, possession-based football, and Bayer's total of 6,622 successful passes in the Europa League this season is the most by any team in a single edition since 2019-20 victors Sevilla recorded 6,971.
Their passing accuracy of 89.5 per cent is the second highest on record (behind Nice in 2017-18, 90 per cent), while their 94.3 per cent success rate with short passes is the best ever recorded in a Europa League campaign.
But even when Leverkusen have been less than free-flowing, they have found ways to avoid defeat.
They squandered a 2-0 first-leg lead in the second leg of their semi-final tie against Roma, only to fight back for a 2-2 draw which saw them progress 4-2 on aggregate. Josip Stanisic scored a 97th-minute equaliser in that game, the sixth goal Bayer have scored in the 90th minute or later in the Europa League this term.
That is the most ever managed by a team in a single major European campaign, and they also rescued their unbeaten Bundesliga record with last-gasp strikes against Borussia Dortmund and Stuttgart last month.
If Leverkusen find themselves with their backs against the wall on Wednesday, viewers would be wise not to rule them out.
Can the nearly men get over the line?
Leverkusen's Bundesliga triumph has allowed them to shake off their "nearly men" tag, but Atalanta are hoping it's a case of fourth time lucky for them in major finals under Gian Piero Gasperini.
La Dea, whose only major trophy win came in the Coppa Italia in 1962-63, were beaten 1-0 by Juventus in the Coppa Italia final last week – their third loss in that competition's showpiece game under Gasperini.
However, they bounced back with a 2-0 Serie A win over Lecce on Saturday, Gianluca Scamacca and Charles De Ketelaere scoring as they secured a top-five finish and Champions League qualification for 2024-25.
A return to Europe's premier club competition is just reward for a fine campaign for the Bergamo club, who will finish a Serie A season with more than 65 points (currently 66) for the fifth time (with all seasons adjusted for three points per win).
The four previous instances – in 2016-17 (72), 2018-19 (69), 2019-20 (78) and 2020-21 (78) – also all came under Gasperini.
While their free-flowing attacking play has returned this campaign, La Dea have also been excellent without the ball, facing just 2.8 shots on target per Europa League game on average. That is the lowest rate of any team in the 2023-24 competition, with opponents Bayer facing 4.1 per match.
Their backline can expect to be tested on Wednesday, though, with Bayer's total of 232 shots in the Europa League this season the most by any team in a single edition since Chelsea tallied 247 in 2018-19.
The coaches
Fans can expect an intriguing tactical battle between two progressive coaches at the Aviva Stadium.
Gasperini has overseen the most successful period in Atalanta's history since taking charge in 2016, though this will be his first European final as a manager.
At the age of 66 years and 117 days, he will become the oldest coach to take charge of his first major European final, and the oldest overall since Jupp Heynckes led Bayern Munich to glory in the 2013 Champions League final (68 years, 16 days).
His counterpart Alonso – at the age of 42 years and 179 days – will be the youngest coach to manage a men's European final since Roberto Di Matteo oversaw Chelsea's memorable victory in the 2012 Champions League final at the age of 41 years and 356 days, beating Heynckes' Bayern.
Having played for Liverpool in the 2005 and 2007 Champions League finals, Alonso will also become just the fourth person to play in and manage in a major European final this century.
Zidane played for Madrid in the 2002 Champions League final then managed them in the 2016, 2017 and 2018 editions. Antonio Conte played for Juventus in the 2003 Champions League showpiece and coached Inter for the 2020 Europa League final, while Giovanni van Bronckhorst achieved the feat as a Barcelona player (2006 Champions League) and Rangers boss (2022 Europa League).
Players to watch
The likes of Alejandro Grimaldo, Victor Boniface, Granit Xhaka and Robert Andrich have played crucial roles for Bayer this season, but their key man is undoubtedly Florian Wirtz, who was named Bundesliga Player of the Year on Monday.
Wirtz scored 11 goals and provided 11 assists throughout Bayer's triumphant Bundesliga campaign, also recording eight goal involvements (four goals, four assists) in the Europa League this term – the most of any Leverkusen player.
Meanwhile, his total of 28 open-play chances created in the 2023-24 competition has only previously been bettered by five players in a single edition, most recently Amin Younes for Ajax in 2016-17 (30).
For Atalanta, all eyes will be on Scamacca, who scored outstanding goals against Liverpool and Marseille in the last two rounds.
The former West Ham striker has six goals in the Europa League this season, a tally only previously bettered by two Italian players in a single edition. Giuseppe Rossi netted 10 times for Villarreal in the 2010-11 tournament, while Ciro Immobile scored eight for Lazio in 2017-18.
Prediction
Leverkusen enter Wednesday's game as favourites, with the Opta supercomputer rating their chances of victory within 90 minutes at 50.2 per cent.
Atalanta, however, should not be ruled out, having won seven of their nine matches since losing 1-0 in the second leg of their Europa League quarter-final tie against Liverpool (one draw, one defeat).
They are assigned a 24.4 per cent chance of victory, with 25.4 per cent of the supercomputer's match simulations finishing level, which would mean extra time and potentially penalties.
Hojlund form gives Man Utd 'luxury problem' for FA Cup final, says Ten Hag
Rasmus Hojlund's return to form presents a "luxury problem" for Manchester United ahead of this weekend's FA Cup final against Manchester City, says Erik ten Hag.
Hojlund came off the bench to score United's second goal as they rounded off their Premier League campaign with a 2-0 win over Brighton and Hove Albion on Sunday, having also netted in last week's 3-2 victory over Newcastle United.
He finished his debut Premier League season with 10 goals, becoming the youngest player to reach double figures in 2023-24 (21 years, 105 days old as of Sunday).
Hojlund has battled injury problems and dips in form throughout the campaign, and in his absence, Ten Hag has often opted to deploy Bruno Fernandes as a false nine.
The Portugal international started United's last two matches in that position, and Ten Hag says he has plenty to think about as he prepares to name his cup final lineup.
"It is not a dilemma, it is a luxury problem," Ten Hag said.
"I think both formations can be a success because, as you know, we can play with the set-up from the Etihad, where we were a threat with Bruno's movement in behind.
"With Rasmus Hojlund in behind and in form, it is absolutely something we have to consider.
"Let's have a thought, but let's not say we only need 11 players. In a tough final, you need a bench as well."
Hojlund failed to score in his first 15 Premier League matches before ending his drought against Aston Villa on Boxing Day, though he did score five times in United's unsuccessful Champions League campaign before Christmas.
He has 16 goals across all competitions this term, which Ten Hag sees as a good effort when taking his fitness problems into account.
"It could always be better, but don't forget he had three injuries this season," Ten Hag said.
"He came in with an injury and missed the start, then he got injured before winter, and then got another injury after winter.
"Every time that has broken his rhythm. If you score 16 goals for a first season, it is okay, and remember it is also not over. We have the final too."
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