Chelsea welcome John Terry back into their defence while Manchester United have Rio Ferdinand available again after his back problem.Sir Alex Ferguson will field Cristiano Ronaldo after he emerged unscathed from a car crash this week and Patrice Evra returns from suspension following his altercation after last season's game at Stamford Bridge.Sunday's showdown sees United look to step up their title bid after a shock defeat to Derby County in the Carling Cup semi-final first leg.

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