Manchester City are still waiting to discover the full extent of the injury to midfielder Kevin De Bruyne which saw the Belgian forced off towards the end of the Premier League win at Swansea.
De Bruyne helped City record what was a 10th straight victory of the new campaign as they came from behind to beat the Swans 3-1 with a brace from Sergio Aguero.
Reports on Sunday suggested De Bruyne had already been ruled out for around a month with a hamstring problem, meaning he would certainly miss the Champions League game against Celtic in Glasgow on Wednesday night as well as Belgium's forthcoming World Cup qualifiers over the international break.