Alvaro Morata got his big break at Real Madrid under Jose Mourinho, signing his first professional deal with the La Liga side in 2010.
Eager to impress, the Spain international has admitted he would often take Mourinho’s advice to heart.
And after being told by the now Manchester United boss to “fight” during his first derby clash against Atletico Madrid, he has revealed he put in a deliberately hefty challenge on Diego Costa just to prove a point.
Speaking about Moutinho’s influence on his early career, Morata told Spanish broadcaster Movistar: “He has character, he took care of the homegrown players.
“He gave me the first big contract with Madrid and he told me, ‘If you get it right you will not have to work in your life.
“I did not focus from the first moment, I was 17 years old and trained to have fun, not to be a Madrid player or to have to support my family.
“Mourinho told me I had to focus on me. He gave me the alternative.
“I played with Nacho in the reserves and he told us that we had to fight hard, that is what he wanted, what he likes.
“Mourinho told the two of us that in the Calderon [against Atletico Madrid] we had to fight.
“I almost took out Diego Costa, I gave him a brutal kick!”
However, Morata admitted it has not ruined his relationship with his Spain team-mate, adding: “Sometimes I remind Costa and we laugh.”