Manchester City manager Manuel Pellegrini has said that the club are yet to discover the extent of Vincent Kompany's latest injury.
The Citizens' captain limped out of Wednesday night's Champions League semi-final defeat to Real Madrid with an apparent groin problem.
Kompany has only started 13 Premier League games this season and this latest injury is the 33rd of his eight-year City career.
"We don't have yet the medical examinations so we don't know exactly in this moment," Pellegrini told reporters when asked for an update on the Belgian. "He is with the doctor making some exams. Probably on Monday we will know."
Should it turn out to be a serious problem, Kompany would miss the rest of the season and possibly be forced to sit out Euro 2016.