31 December 2011 Last updated at 15:22 GMT

Alex Ferguson bemoans his defensive injuries after defeat by Blackburn

Manchester United boss Alex Ferguson says the third goal killed any chances they had of winning having come back from a two-goal deficit against Blackburn.

The game finished 3-2 to the Premier League strugglers and Ferguson believes United were hamstrung by a lack of fit centre backs, having to play Michael Carrick out of position and a heavy pitch.