The coach added he had no queries over the Portuguese spending time with hotel heiress and party animal Paris Hilton.
"Cristiano is a phenomenon. Nobody can criticise him if he is with Paris Hilton on holiday, or he goes to Los Angeles, or he buys a Ferrari," the Sun quoted Mourinho, as saying.
He added: "Somebody who works and plays the way he does is from another world.
"Of course, I will enjoy coaching him. He will be extremely easy to coach.
"But I don't think Cristiano is pleased even after having an incredible season or scoring 26 goals in La Liga. He's not happy because he's not won titles." (ANI)