Trent Alexander-Arnold is a doubt for Liverpool’s clash with Manchester City.
Alexander-Arnold was a notable absentee as the Reds rallied to an emphatic 5-1 win in their Champions League fixture against Porto on Wednesday night.
The England international remained on Merseyside after suffering a groin injury in training ahead of the Group B encounter at the Estadio do Dragao.
Jurgen Klopp has now revealed that Alexander-Arnold could be sidelined for this weekend’s visit of the Premier League champions to Anfield as a result.
He said: “The situation when you play Saturday and Tuesday, the players who start the game – which Trent obviously did – have on Sunday no training, they have recovery.
“On Monday, the only session we have together, we pretty much walk through the things.
“We have meetings and on the pitch we just show the difference between the opponents, so there was no intensity really in the session.
“But Trent anyway in the middle of the session felt his adductor and in that area he has now a little injury.
“Obviously when you have something with your muscle, it’s not likely for Sunday – no muscle injury heals that quick. After that, it’s internationals.
“I don’t want to make the decision for him but what I heard, I don’t think it will be possible for him to be with the national team.
“The other people have to decide that in the end. But hopefully after that he will be ready again, but we don’t know exactly.”