1:27 HT Manchester City 2-1 Chelsea
«The feeling is if it is muscular, we are going to lose him in the toughest period of the season, but it is what it is.
«We have young players and we will try.»
Guardiola also revealed that midfielders Rodri and David Silva had suffered cramp during the win over Frank Lampard’s side.
The City boss added: «With Rodri and David Silva, they were problems with cramp, and they were tired.
«Rodri is a month and a half without playing games.
«David after the international break didn’t train too much and after these games you need some rhythm in your legs.
«These games are so demanding and that’s why it happened.»