The Chelsea boss told Saturday's newspapers the England striker could move abroad in the summer because there is no chance of his own efforts to sign the Reds' no. 10 being successful.
However, Moyes laughed off the suggestion when asked to reply to the story, stressing the only country his centre-forward will be planning to play in is in Brazil during the World Cup finals.
"I completely disagree [with Mourinho]," he insisted. "I can only tell you that I totally disagree. He will go to Brazil [though]!"
Mourinho, who Moyes revealed was upset by the way the media reported his quotes earlier in the week about United, lifted the lid on his failed attempt to bring Rooney to Stamford Bridge.
"Manchester United were very clear last summer," said the ex-Real Madrid coach. "They don’t swap or sell players to their direct rivals in this country.
"I don’t see that changing this summer. But I think maybe they will try to sell to a non-direct rival, not in England."