The Manchester City striker suffered a muscular injury against Real Madrid which could keep him out of the Chelsea clash.
Manchester City face Chelsea on Saturday looking to bounce back from the Champions League defeat to Real Madrid,
Real Madrid look for a rare three-game season sweep of Barcelona and a nearly-insurmountable 11-point cushion atop La Liga when El Clasico his the Bernabeu.
Barcelona must dust themselves down after Champions League defeat to try and slow Real Madrid's steady march towards the La Liga title in Sunday's Clasico.Defeat by PSG in the Champions League quarter-finals may have ended any chance of that happening, beyond a miracle comeback in La Liga.