Manchester City midfield maestro David Silva has declared that local rivals Manchester United have failed to get the best out of Juan Mata during the first two months of his spell at Old Trafford, but told the Independent that his friend is destined to shine at Old Trafford.

Mata made a club-record £37.1m move from Chelsea to United in January but has largely struggled to show Red Devils fans why he commanded such a whopping transfer fee, often left on the periphery of matches in an advanced wide role and still waiting for his first Premier League goal of the season.

Silva has revealed that he's been out to dinner with the Spanish international and helped smooth his transition to life in Manchester, remaining convinced that United have signed a star who will come to the fore after being given time to adjust.

He told The Independent:  "It is a difficult situation for him because the team is not playing that well. They have not managed to bring out the best out in him but he is a very talented player and he will show it.

"He wasn't getting the minutes at Chelsea so it was a good move for him to go to United. I have been out to dinner with him and his family and we are friends.

"Anything he needs, he knows he can come to me for. Maybe after the game we can have a meal; it depends."

Close friends will be enemies for 90 minutes tomorrow night for the season's second Manchester derby at Old Trafford, with City in particular desperate for three points to maintain their title charge.

Manuel Pellegrini's men will come up against a United side lifted by events over the last week though, with a rousing Champions League fightback against Olympiakos followed up by Saturday's 2-0 win over West Ham United, which featured a brace from Wayne Rooney.

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