Inter Milan boss Simone Inzaghi has warned his side they will need to be at their best if they are to get the victory they need at Red Bull Salzburg to clinch qualification for the Champions League knock-out stages.

Inter travel to the Red Bull Arena on Wednesday second in Group D, behind Real Sociedad on goal difference, and knowing a win would ensure progression with two games to spare.

The Serie A side beat Salzburg 2-1 in the reverse fixture last month, but Inzaghi says the Austrians, who lie third in the pool, are capable of causing last season’s beaten finalists problems.

“We know the importance of tomorrow night’s match,” he said at a press conference.

“We know that we are facing opponents who have demonstrated their worth at the San Siro. Salzburg are a physical team that run a lot, with excellent players.

“We have already played here and we know how strong the enthusiasm of the fans is. We have to play an Inter match because Salzburg are a team that knows how to play these matches.

“Salzburg are a quality team, well-organised. As at the San Siro, tomorrow we will have difficulties and we should overcome them together in the best possible way.

“We will need technique and physicality. We will need the best Inter, we know the importance of the match and we will try to put on an important match.”

Inter will be without France defender Benjamin Pavard, who is facing a spell on the sidelines after dislocating his kneecap against Atalanta on Saturday.

Inzaghi said Denzel Dumfries may not be able to start the game, with Yann Aurel Bisseck an option to start at right-back.

The Inter boss said: “He (Bisseck) is working very well, he is a growing player who is showing great signs in training and in the minutes he has had available.

“Dumfries had not yet recovered fully to be able to train. I spoke about it with the doctors and physiotherapists, he is there, but it is not yet known whether he will start the match.

“I have the option of Bisseck, (Stefan) de Vrij, possibly I can put Carlos Augusto on the right.

“The possibilities are different. We could also use Darmian in that role.”

Inter Milan extended their unbeaten start in Champions League Group D with a 2-1 win over Red Bull Salzburg at San Siro.

Oscar Gloukh gave the Austrians hope when he cancelled out an opener from Alexis Sanchez but Hakan Calhanoglu’s second-half penalty extended the fine form of Simone Inzaghi’s side.

Inter bounced into the game off the back of a 3-0 win over Torino on Saturday but found themselves up against it early on against confident opponents who had started their campaign with an eye-catching 2-0 win at Benfica.

Gloukh had the first chance when he rifled a fifth-minute chance straight at Inter keeper Yann Sommer, and the same player combined well with Maurits Kjaergaard only for the Dane to mis-kick straight at the Swiss stopper.

Inter barely threatened in the opening quarter of an hour but they snatched the lead against the run of play in the 19th minute when Davide Frattesi swept up a pass from Henrikh Mkhitaryan and played a neat ball to Sanchez who fired home.

The goal galvanised the hosts who pushed for a second and Salzburg defender Amar Dedic almost presented them one when he deflected a cross from Denzel Dumfries inches wide of his own goal.

Calhanoglu’s set-pieces posed a constant threat to the Austrian defence while Sanchez played in Lautaro Martinez who flashed a shot across the face of goal.

Inter continued in the ascendency early in the second half but it was Salzburg’s turn to break through against the run of play in the 57th minute after Kjaergaard dealt well with a long ball out of defence from Roko Simic.

The Dane found Gloukh, who rounded off a brilliant team move by shooting beyond Sommer and giving his side realistic hopes of another momentous scalp.

But Salzburg’s revival lasted just eight minutes before Frattesi fell under a careless challenge by Lucas Gourna-Douath in the box and Calhanoglu duly stepped up to send visiting keeper Alexander Schlager the wrong way.

Augusto powered a cross by Matteo Darmian straight at Schlager while Martinez blazed a good chance over the bar as Inter looked to make the game safe.

Inzaghi’s men thought they were home and dry 10 minutes from time when Frattesi’s ball across the box fell to Martinez, who fired home before VAR ruled Frattesi offside.

Salzburg failed to find the breakthrough they required and Inter played out the remaining minutes relatively comfortably to cement their status as the team to beat in Group D.