Parma defender Felipe is confident fellow Brazilian Kaka can rediscover his best at AC Milan.
The Diavolo brought Kaka back four years after selling him to Real Madrid.
"I think Kaka was the best signing," the stopper, 29, told Sportal. "He has a great desire to show that he is still a great player.
"He may have had to stop now because of his injury, but, in my opinion, he will do some great things this season."