BBC pundit Steve McManaman does not believe that Manchester City will retain their Premier League title should Chelsea defeat Manchester United on Sunday. The reigning champions were surprisingly beaten 2-1 by West Ham despite a second half onslaught that came close to earning the Blues a result at Upton Park. Although McManaman insists that City are not playing poorly, he doubts that they will be able to catch Chelsea if Jose Mourinho's side open up an eight-point lead at Old Trafford. VIDEOS Scroll down to watch... Sergio Aguero reacts after seeing Manchester City lose 2-1 to West ham at Upton Park
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Manchester City were defeated 2-1 by West Ham at Upton Park
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Morgan Amalfitano and Diafra Sakho scored for the Hammers
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Steve McManaman rated David Silva's goal as the highlight of the game
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Chelsea can move eight points clear by beating Manchester United
@placeholder teammates congratulate Diafra Sakho (R) after his goal gave them a 2-0 lead