Liverpool manager Jurgen Klopp has confirmed that midfielder Naby Keita is injured.
The central midfielder was not involved in the Reds' 2-1 loss to Manchester United at Old Trafford on Monday.
Keita has struggled with injuries during his entire stay with Liverpool, since arriving from RB Leipzig in Germany.
Speaking post-game, Klopp told the club's website: "We need further assessment, but it doesn't look like that tomorrow he is in training.
"But we need further assessment.
"It's just Sunday, yesterday, and then whether we know more tomorrow, I don't know. "