Joe Hart and Raheem Sterling out for a month after suffering injuries in City's derby loss to United

Sterling pulled up early in the first half and was replaced by Fernando while Hart injured himself clearing a short Martin Demichelis back pass.

City boss Pellegrini confirmed that both players had suffered muscular strains and would be out for up to four weeks.

Joe Hart and Gaël Clichy - Manchester CityAFP

Hart has a strained calf while Sterling has a groin injury, and both will miss England's upcoming matches against Germany and the Netherlands next week.

England coach Roy Hodgson is already without Wayne Rooney, Jack Wilshere and Luke Shaw.

However, more worryingly for City, the pair could miss the key Champions League quarter-final tie against PSG.