Makelele left Real for Chelsea in bitter circumstances, but insists Perez is the leader Real needs.
"This will be good," said PSG midfielder Makelele. "When I was there he turned us into a super club. Everyone dreamed of playing for Real and getting this shirt.
"He knows how to make the changes. He's aware of everything and knows the way to achieve a better future. Football is the greatest sport, there is no comparison."