#4 Kevin de Bruyne
Probably the best player ever coached by both Mourinho and Guardiola is Kevin De Bruyne. The Belgian was already a Chelsea player before Mourinho took charge at the Stamford Bridge in 2013.
Under the Portuguese, De Bruyne could only make three league appearances for the Blues and by the end of 2013, it was clear that the Belgian wasn't part of Mourinho's plans at Chelsea.
Mourinho, who is now in charge at Manchester United, said at the time: "I try to be honest with Kevin. He's not selected because I didn't like the match he played against Swindon and I didn't like the way he was training."
So, he left the club in 2014, only to return to the Premier League with Manchester City as a world-class midfielder to join Mourinho's arch-rival Guardiola at the Etihad Stadium.
De Bruyne has been a star under Guardiola, while he was not even given a chance by Mourinho.
Edited by Abhinav Munshi