The Brazil captain has complained about the way he was treated by Leonardo in the final months of his time with PSG.
"Six months later, I am on the bench and I give him the keys to defence, with (Alessandro) Nesta.
"I then brought him to PSG (in July 2012) where he became one of the best defenders in the world. I have been his greatest admirer throughout his career. But he had come to the end of something. There were some things that happened last season that I didn't like.
"He knows them because we talked about them together..."