Jurgen Klopp has confirmed Trent Alexander-Arnold has suffered a recurrence of his knee injury after the Liverpool defender was withdrawn at half-time of Saturday's win over Burnley.
Alexander-Arnold's corner gave Diogo Jota the chance to open the scoring in the first half as the vice-captain made Premier League history by becoming all-time leading defender for assists with his 58th but he was taken off at the break for Harvey Elliott as the Reds won 3-1 to go back to the top of the Premier League.
Alexander-Arnold only returned to action at the end of last month after suffering a knee injury in the FA Cup victory against Arsenal on January 7 but could now be set for another spell on the sidelines.
Goalkeeper Alisson Becker was also absent alongside Joe Gomez, who Klopp confirmed is suffering with illness, and RRyan Gravenberch, who sat out the match after picking up what is thought to be a minor issue.
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Klopp was coy when asked to provide an update on Alisson but conceded Alexander-Arnold has reaggravated the knee problem from last month.
"His knee again? Yes, it felt like that," Klopp said of Alexander-Arnold. "He got it stuck in the grass and we will see. We have [to send for] assessment. At half time we had to take Trent off and that's a double problem if you want. One is that Trent is off and the other is we had no other right-backs available.
"So we told Curtis (Jones) what he had to do so we changed formation slightly and tried to make it as simple as possible for him, because it was first time in the life he has played the position (inRead on liverpoolecho.co.uk