Manchester City midfielder Kevin De Bruyne will be assessed this week after leaving the club's match against Swansea City with a hamstring complaint.
After adding an assist in the 3-1 win at the Liberty Stadium, the Belgian international pulled up in the 81st minute, clutching his hamstring, and was replaced by Jesus Navas.
Manchester City manager Pep Guardiola told "BBC Sport" that the club will assess the injury prior to their Champions League match at Celtic on Wednesday after continuing their perfect start to the Premier League season.
"It looks like it was muscular, but I am not a doctor," Guardiola said. "It is a pity because he is an important player. That's why we have to have a big squad as everyone will help us."
