Liverpool boss Jurgen Klopp admits Cody Gakpo's injury is a concern.
Gakpo scored the equaliser in Liverpool's 2-1 defeat at Tottenham on Saturday, but was withdrawn at halftime.
Klopp later said: "The biggest problem of the game, to be honest... before Cody Gakpo scored, we got a free-kick and he got injured and he is now with a brace limping down the corridor.
"That's my biggest problem, to be honest, in this moment. We lost two [to red cards] and maybe a third player - really bad, really bad. So, yes, that's something we have to deal with obviously."
Asked if the injury for Gakpo was a 'bad one', Klopp added: "Possibly, I don't know.
"He wore a brace. He scored a goal but afterwards, but after that shot he felt it even more. It was from the foul before."