Mohamed Salah will miss Liverpool's trip to Brighton & Hove Albion on Saturday.
Reds star Salah asked to be substituted shortly after scoring in Wednesday's 4-0 win over Galatasaray in the Champions League, and has now been ruled out of the trip to the south coast by Arne Slot.
Speaking at his press conference on Friday, Slot said: "It is unusual [Salah is injured], I think you expect the outcome so he is not available for tomorrow.
"The good thing for us is we go to international break, bad news for Egypt, he can't go there. We hope with what Mo has shown in the past he can recover faster than other players. He takes such good care of his body, he can be back earlier than others as history has shown. Only two weeks until we go again..."
Slot would later confirm that Salah has a muscle injury, while the Reds boss also discussed the fitness of Joe Gomez, who was in the squad against Galatasaray but didn't get off the bench.
"Joe wasn't able to come in, we tried to postpone it as often we could," said Slot. "He might be - might be - available tomorrow but not to start."
Elaborating on Salah's display against Galatasaray, against whom he grabbed a goal and an assist after missing a penalty, Slot said" "His first half was not too bad, the whole team played well. Individuals, it's helpful if the teams play well. They can then shine.
"It says a lot about his mental strength but that comes with age. If you miss chances, older you get, you get better at handling situations like this. He has always done this really well. He has done this so well in his career, to shut it down and create a goal and an assist, it is the experience he has."
