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Jurgen Klopp was given a fresh injury headache when both Virgil van Dijk and Alex Oxlade-Chamberlain missed the last training session before Tuesday's Barcelona showdown.

The Liverpool manager is already without Mo Salah, Roberto Firmino and Naby Keita for the second leg of the Champions’ League semi final, with his side 3-0 down from the first leg.

And the chances of overturning such a daunting deficit look even bleaker, with the news that two key players could be doubts for the Anfield tie.

Neither player took part in the open session for the media at the club’s Melwood training ground, with a spokesperson suggesting they were instead undertaking ‘individual, tailored sessions’ for their specific needs.

But it is understood Oxlade-Chamberlain felt a muscle pull when warming up at Newcastle on Saturday evening, and is now receiving treatment - which means he is almost certainly a non-starter for the game.

(Image: Getty Images)

Van Dijk could also be a doubt with the player suffering from a foot issue in recent weeks.

But he has played through that injury, and Klopp still believes he could be ready for the match.

The manager revealed that Salah pleaded for the chance to play against Barcelona, but tests on Sunday showed he suffered a concussion during the contest at Newcastle when he took a glancing blow to the head.

Premier League protocol is clear that any concussion, no matter how mild, automatically rules a player out of any competitive game for the following six days.

That means he WILL be available for the final weekend of the season and the title showdown. Klopp said of Salah and Firmino: “Both are not available for tomorrow.”

(Image: Action Images via Reuters)

And speaking about Salah he added: “He is desperate, but we cannot do it. It is a concussion and that means he will not even be allowed to play. He feels OK but that is not good enough from a medical point of view.”

Klopp urged the passionate Liverpool fanbase to celebrate the season their side have delivered during an incredible campaign - and he wants an atmosphere which can shake even the mighty Barcelona: “It is a long season and there is at least a little chance to make it even longer.

“If not, these are the last two home games of an incredible season, and I think we should celebrate that with a good performance on the pitch and a very, very good performance in the stands. That would be really nice.

The approach we will take is that we try to win the game, if that makes sense. You only can deal with it step by step. We don’t have to score three in the first 10 minutes.

“The last five minutes are enough to score three if it is still 0-0. Let’s give it a try with all we have. That is what we have always done and we will do again.”