"Ronnie wants to play and he would have surely played part of the game in Bergamo," he revealed. "He'll get time in Cagliari.
"Pato is a great champion and he will prove it. All we have to do is wait until January when he is available.
"The only worry that he has at the moment is that he hasn't learned very much Italian, but luckily footballers don't have to say that much.
"He goes a lot on instinct and that's something that you have inside and it can't improve or deteriorate.
"He is lucky that God has given him that quality. Now he must exploit it and use it for the good of the team."
Pato is available in official games from January 3 when his move from Brazilian side Internacional is finally complete.