Moyes believes that Rooney's decision to sign a new contract is a clear sign that he trusts the Scot to be a success at United and attract some of the world's top players to Old Trafford.
"I always felt some day our paths would cross again and they have," said Moyes.
"He knows by the way I train, by the way I work, by my determination to succeed that I won't allow this to go the way it is. I'll make changes if it doesn't improve.
"I said to you as well, and you'll get to know when I say it I mean it, that we'd be in for all the best players in the world - and that hasn't changed.
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