Bayern Munich are standing firm over the future of United target Owen Hargreaves, despite his repeated pleas to be allowed to leave. General Manager Uli Hoeness is becoming weary of United's persistent interest in the midfielder, and has advised Hargreaves to stop pushing for a move. "He would be well-advised to keep quiet, otherwise I really will get mad and that will not be pleasant for him," Hoeness said. "I cannot understand why, after two discussions, he keeps coming back to me. "There is no chance whatsoever that we will let him go and he has got to learn to accept the decisions taken by those above him." Hoeness insists that Hargreaves is a fundamental part of the new team Bayern are trying to build, and that selling him would send out the wrong message about his club's ambition. "We want to build a new, young team and we are not going to sell people like Hargreaves," he said. "Bayern Munich will never be taken for a ride by big clubs and become weak at the knees as soon as a certain level of money is mentioned. "If you gain that sort of reputation, then it is all over for you." Sir Alex Ferguson revealed last week that chief executive David Gill is doing his utmost to seal a deal for Hargreaves, but Hoeness insists Gill's efforts will prove fruitless. "I can't understand all the excitement because this story was over two weeks ago," he said. "We have made it clear that Owen Hargreaves is not for sale. "David Gill can phone me up at 8.30 every morning to talk about the English weather or tea but not about Owen Hargreaves."