The France international has fond memories of his time under the flamboyant coach, praising the Portuguese for creating combative teams with lots of character
The Frenchman emerged as one of La Liga's brightest defensive talents under Mourinho between 2011 and 2013 and he has nothing but fond memories of his time with the Portuguese coach.
"I'm only young and haven't had many coaches, which means it's difficult for me to make comparisons, but I'd say it's his personality and charisma, which were felt by the whole team," Varane told fifa.com when asked about Mourinho's best qualities.
"He's a winner, a competitor, and he transmits that to his players. Wherever he's gone he's always created combative teams with lots of character.
"He told me that I'd have my chance to play and that I was going to find out about myself and get to know myself better.
"Mourinho kept his word. In the two years I played for him he always kept his word, and he also knew when to throw me in at the right time."
Varane, 20, recently returned to match action after a lengthy spell on the sidelines and has consequently made only two official appearances for Madrid this term under Carlo Ancelotti.