Manchester City have suffered a major blow ahead of Sunday's derby against United as David Silva has been ruled out for up to four weeks with a knee injury.

The playmaker picked up the damage in the defeat to Newcastle during the week.

PELLEGRINI: “David is a very important player but we have a squad and we will have to replace him with another player.” #cityvunited

— Manchester City FC (@MCFC) October 31, 2014

Samir Nasri may step in for the Spaniard now that he is back in the first team picture after injury.

In better news for City Yaya Toure has been declared fit for the game after picking up a knock in that match.