However, the Frenchman insists he's happy in Madrid after receiving playing assurances from coach Zinedine Zidane.
Varane told Canal + tonight: "It is of course flattering to hear that.
"Mourinho is the one who convinced me to go to Real Madrid and Manchester is a big club. But from the time the club and I are in phase of the project, there is no question to ask.
"I always said I felt myself happy in Madrid. We must ask the pros and cons. It is a decision of life and career. We are men and we must make decisions.
"From the time I was reassured about my role in Madrid, there were no more questions to ask."