Cole reckons he was below his best during Mourinho’s first spell at Stamford Bridge and is eager to do better this time around.
But the Special One insists Cole is the “perfect player” – a model professional who always gives his best.
Mourinho said: “He is a great boy and a great professional. I don’t remember one single action that made the manager feel it wasn’t professional.
“He always worked hard and was always committed. He is never late, always gives his maximum in training and matches.
“He is always a group man. He’s very humble, very polite. I only know him in this way. He is a perfect player.
“He gave me everything when I was here. So he owes me nothing.”
That is quite a statement about a player who has often been in hot water during his career.
The England star courted controversy when he accidently shot a work experience student with an air rifle and was fined £90,000 for his “bunch of tw@ts” tweet about the FA last year.
But Mourinho was not around for either incident – and had nothing but praise for the full-back.
He was speaking after Cole gave a rare interview in which he made the frank admission about his past form for Chelsea.
The 32-year-old has won every honour in the club game since joining the Blues from Arsenal in 2006.
But Cole said: “Having the manager back now from 2006 when he bought me, I still feel I owe him something.