Ancelotti: Pato is better than Ronaldinho
The teenage sensation joined the Rossoneri in August - a month before his 18th birthday - but due to Italian football regulations that state non-EU minors may not be registered in Italy he is unable to play until he can be formally registered when the transfer window reopens.
But Ancelotti has been impressed by the Brazilian youngster's performances in training.
"Pato is better than Ronaldinho," he told Italian sports daily La Gazzetta dello Sport. "Our new signing is a phenomenon.
"And with him I can maybe return to a formation with two strikers."
But elsewhere there is cause for concern as Pato's compatriot and AC Milan talisman Kaka claims that violence in Italy could see him leave the European champions.
"If things continue like this, even I could leave Italy," he told the newspaper.
"My wife and parents come often to the stadium and I worry about their safety."
