Alisson is a doubt for Liverpool's crunch Champions League clash against Atletico Madrid.
The Reds No 1 goalkeeper picked up a muscle injury in training before Jurgen Klopp's side's 2-0 defeat to Chelsea in the FA Cup.
Klopp is not sure how long Alisson will be out for, but looks set to also miss Saturday's Premier League match against Bournemouth before their clash against Atletico on Wednesday.