Xavi believes it will be a "catastrophe" if Barcelona do not beat Girona on Saturday as they look to keep up their LaLiga title charge.
A run of seven wins in eight league matches has put Xavi's men top of the table, holding a three-point lead over rivals Real Madrid in second.
They continue their bid to win their first LaLiga title since the 2018-19 season on Saturday at home to Girona, who sit 11th and just four points above the relegation zone.
Xavi hopes his team can pick up another three points amid the pressure of a title race, telling reporters: "You have to beat Girona. This is Barca.
"This is the Barca environment, I know it very well. If we don't win tomorrow, it will be a catastrophe.
"Try to win it because it will be a difficult match. Michel [Girona head coach] has said that they have nothing to lose and we will come out with pressure because we want to win LaLiga."
Xavi is hoping Ousmane Dembele will extend his Barcelona contract amid rumours of a move to Paris Saint-Germain.
Dembele scored Barca's winner as they beat Real Sociedad in the Copa del Rey quarter-finals on Wednesday, continuing his excellent form this season after a tough 2021-22 campaign.
The France international has been involved in 15 goals with Barcelona in all competitions this season, already equalling his record of last term, but with his contract set to expire in 2024, there had been rumours of a move to PSG.
But Xavi wants Dembele to remain with the Spanish giants, telling reporters: "Ousmane is an important player, someone who makes a difference.
"It's difficult to find these kind of players. For me, he's a key player. Ousmane knows it, the club knows it.
"He has changed his mentality and I hope to have him here for many more years."
Barca overcame wastefulness in front of goal to overcome La Real and reach the Copa del Rey final four, with Dembele's goal enough to secure a narrow 1-0 win despite having 20 shots.
While Xavi is concerned about his side's profligacy in front of goal in tight matches, he believes his team are much improved from last season, saying: "I am worried about not finishing them [close games]. Many things have to be improved
"We have to value how we were last year and how we are now. There are things to improve, obviously, but I think we are in a very good moment of form and it should be valued."
Maanum stunner inspires Arsenal turnaround against Bayern, Barca ease past Roma into semi-finals
Arsenal defeated Bayern Munich 2-0 at Emirates Stadium to complete a 2-1 turnaround on aggregate and reach the semi-finals of the Women's Champions League.
Trailing to a Lea Schuller header from last week's first leg, Frida Maanum fired in a sensational 20-yard effort to level up the tie within 20 minutes of Wednesday's return game.
Stina Blackstenius powered in a header six minutes later to give Arsenal the lead in the tie for the first time in front of the 21,307 watching spectators in north London.
Jonas Eidevall's side missed chances to kill off the tie, but they saw out the victory to set up a meeting with the winners of Thursday's tie between Paris Saint-Germain and Wolfsburg.
Barcelona earlier booked their spot in the semi-finals, where either Chelsea or Lyon await, with a commanding 5-1 win over Roma at Camp Nou sealing a 6-1 aggregate victory.
Two-goal Fridolina Rolfo scored either side of Maria Leon's curler to put Barca, who finished runners-up to Lyon last season, out of sight before half-time.
Asisat Oshoala tapped in a fourth a minute after the restart and Patricia Guijarro headed in from a corner to complete the rout.
Competition debutants Roma registered a couple of attempts on target in the remaining 40 minutes, but it was plain sailing for Barca in their quest for a second European crown.
Arsenal and Aston Villa technical staff charged by FA after altercation
Members of Arsenal and Aston Villa's technical teams have been charged by the Football Association over an altercation during their Premier League game last month.
The Gunners staged a remarkable 4-2 comeback at Villa Park on February 18, sealed by a dramatic own goal courtesy of their former goalkeeper Emiliano Martinez.
It came after earlier goals from Bukayo Saka and Oleksandr Zinchenko had helped the visitors draw on level terms, while Gabriel Martinelli added a fourth deep in injury time.
Celebrations were marred between a clash between Villa’s head of performance analysis Victor Manas and Arsenal's technical analyst Miguel Molina, and now the pair have been charged by the FA.
"Aston Villa's head of performance analysis, Victor Manas, and Arsenal's technical analyst coach, Miguel Molina, have been charged following their Premier League game on Wednesday 18 February," read a statement.
"It's alleged that Miguel Molina's behaviour and/or language during the 94th minute was improper and/or abusive and/or insulting, and that his behaviour in the tunnel after the final whistle was also improper."
Manas and Molina have until Friday to provide a response to the FA.
Tottenham seek urgent clarification after FIFA extends Paratici ban worldwide 'with no advance notice'
Tottenham have reached out to FIFA for urgent "further clarification" after Fabio Paratici's ban was extended worldwide "with no advance notice" to the club.
Paratici was one of 11 individuals banned by the Italian Football Federation (FIGC) in January after Juventus were found guilty of alleged breaches in relation to historical transfer dealings.
The Bianconeri were docked 15 points in Serie A as part of the punishment, with Paratici and Juve denying any wrongdoing and lodging an appeal for the initial sanctions to the Italian Olympic Committee.
Paratici was handed a 30-month ban by the FIGC but continued his role with Spurs due to his punishment only falling under the jurisdiction of Italian football's governing body.
But FIFA confirmed on Wednesday those FIGC sanctions have been extended worldwide, with Tottenham demanding immediate clarity over the bans on their managing director of football Paratici.
"Following media reports today regarding the FIFA Disciplinary Committee decision to extend worldwide the sanction imposed by the FIGC Federal Court of Appeals on Fabio Paratici on 20 January 2023, the club made urgent enquiries to FIFA," a club statement read.
"FIFA has late this afternoon responded to us in writing notifying us today, Wednesday 29 March 2023, that a decision has been made by the FIFA Disciplinary Committee to extend the FIGC sanction worldwide.
"This committee deliberation has been taken with no advance notice to any of the parties involved. We are urgently seeking further clarification from FIFA as to the details of the extension and its variance from the FIGC sanction."
The announcement came just a day after Paratici had addressed the club's media and stated head coach Antonio Conte's dismissal from Spurs was the "right decision for everyone".
Paratici placed his full faith in interim boss Cristian Stellini, who will be in charge until the end of the season, and Spurs sought to clarify the interview took place prior to any knowledge of FIFA's sanctions.
The statement added: "We should like to make clear that when Fabio conducted the interview on club channels yesterday neither he nor the club had any indication of this decision being made by FIFA, based on the fact the FIGC sanction was taken on 20 January 2023 and remains subject to an Appeal on 19 April 2023.
"We shall update on this matter in due course."
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