A go-between acting on behalf of the Turin club has reportedly approached Ferguson to ask if he would be keen to succeed Marcello Lippi when he retires next summer.
However, Ferguson said: "I don't want to be drawn into things like that. We've got a big game against Barcelona on Wednesday and I don't want to detract from it."
The United chairman, Martin Edwards, said suggestions Ferguson would move to Italy are "a nonsense".
"We know Juventus very well and I know their vice-president, Roberto Bettega, well," Edwards said. "I'm absolutely certain that if there was anything in it I would have heard from Juventus."
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