Sir Alex Ferguson has told Robin van Persie to ignore the Arsenal boo-boys when he returns to the Emirates Stadium on Sunday.
Van Persie left Arsenal for Manchester United in the summer and has proved the major difference in this season's title race, taking his tally to 24 Premier League goals with Monday's hat-trick against Aston Villa.
His appearance in north London this weekend is unlikely to go down well with the Arsenal fans who felt he had let them down by leaving in the summer, but Ferguson said: "I don't bother about it, and I don't think Robin should bother about it either,"
He added: "There was a bit of booing when he played at Old Trafford and I expect a portion of fans will do that. That is the modern generation I am afraid."
Arsene Wenger has confirmed that United will be given a guard of honour in recognition of their championship triumph, a move Ferguson has backed.
"I am glad Arsene has done that, when they came to Old Trafford in 2002 and Sylvain Wiltord scored the only goal, we did exactly the same," he said.
"That is what great clubs should do."
However, the Van Persie element does add an extra twist, even if the Dutchman's controversial move north has now been justified.
"For Arsenal to have one of their players go to their biggest rivals of the last 20 years doesn't sit well with their fans, nor Arsene for that matter," said Ferguson.
"But it does happen. You just have to move on. Arsenal have moved on now. They are challenging for a Champions League place and have every chance of getting one."