I think it is Sir Bobby Charlton.
Rooney
Dirk Kuyt scored his first ever hat-trick against Manchester United in the 2010/11 season.
Jermaine Pennant, Scored an own goal for united as a Liverpool player and scored against united as a Liverpool player and won the Prem with THE ARSENAL but was born in Jamaica but has represented England.
paul ince Michael Owen
NICE
Michael Owen has scored three goals for Manchester United in the preseason, but he has not scored a goal for Manchester United in the E.P.L so far.
No player has hat trick against manchester united
Manchester United hold the record for the most amount of goals scored in one Premiership Season. In the 1999 - 2000 season, Manchester United scored 97 goals. Dwight Yorke scored 20, and Andy Cole scored 19 goals respectively. The record as of now is Chelsea F.C. with 103 goals in the 2009/2010 season. they took first in the league by one point behind Manchester United.
Brian Deane for Sheffield United v Manchester United.
Eric Cantona
peter schmeicel,easy!
He has yet to score for Manchester United.