Patrice Evra is United's main worry ahead of Saturday's early kick-off. The French defender limped out of the Reds' Champions League win over Benfica and is a real doubt to face Stuart Pearce's side. City make the short trip across Manchester buoyed by an almost complete lack of injury worries - only Sun Jihai is guaranteed to miss out for the Citizens. Neither side has any suspensions going into the game.
Form: United go into the derby on a high after sealing European qualification against Benfica, and without a domestic defeat since losing at home to Arsenal in September. With Chelsea not in action until they host the Gunners on Sunday afternoon, United could extend their lead over the champions to nine points with a win over City. The Blues will have other plans, however, having notched their first away win of the season against Aston Villa last week. Their most recent game ended in a frustrating goalless home draw with promoted Watford.