Luxemburgo, whose reign as Real coach was a disaster, criticised Mourinho's approach and tactics.
"According to him, there was no football before Mourinho arrived," Luxemburgo told A Bola.
"Any other coach would have been crucified, especially if he was Brazilian. Pepe is no central midfielder and has no qualities to play there.
"He bet on three central midfielders and did not attack Barcelona at any time."