Fergie insists Pellegrini still has to mould the superstars into a team.
Real have spent massive ammounts of money on new players this summer.
Fergie told Marca: “Of course these great players are going to assure good football and they will provide great days for the fans.
“The only thing is that Pellegrini still has to mould a team.”
He added: “I don’t believe in everything that this Real Madrid represents, although I respect them.”