Manchester City midfielder Kevin de Bruyne is likely to be out for about six weeks after injuring his right knee during Wednesday's League Cup semi-final victory over Everton.
The Belgium international, 24, changed the game from the bench but fell awkwardly in injury time.
There were fears he could be out for the rest of the season.
"Kevin told me the only thing he can do is work hard and come back," his agent Patrick de Koster said.
"Kevin is sad. His dream is to always be playing football. He will miss games like the League Cup final and in the Champions League, which are important."