Kaka is full of praise for former AC Milan coach Clarence Seedorf.
Seedorf was sacked last month, while Kaka left for Orlando City.
"On Clarence all I can say is that it was always a pleasure working with him," Kaka told reporters as he was unveiled as a Sao Paulo player for the next three months on-loan.
"The period that we worked together was always very professional and sincere. The fact that it was the beginning of his coaching career was never an issue.
"From my point of view it was really nice to work with him.
"I wish Pippo the best of luck - he is a great friend and a great person."
