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Milan striker Andrei Shevchenko has warned Wayne Rooney that he will never become a great player until he curbs his aggressive temperament.
The England hit man has enjoyed a fine second half to the season and is in the type of form that suggests Manchester United are again ready to challenge for silverware.
United have a date with their Milanese counterparts in midweek but Shevchenko, who misses the game through injury, remains skeptical about some of Rooney's more excessive behaviour.