Ten years he arrived as the fresh-faced prodigy. A decade on, Mourinho has won silverware, but not widespread respect.
First he was the self-proclaimed Special One. On his second coming at Stamford Bridge he was the Happy One. He could easily be described as the Divisive One.
There is little doubt that the Portuguese native has walked the walk, which is just as well considering his regular public outbursts and criticisms.
Since arriving in a blaze of glory 10 years ago, he has claimed two Premier League titles., is a double Serie A champion and also has a solitary La Liga title in 2012, an impressive achievement given Barcelona dominance.
A further Champions League success with Inter and a whole hosts of cups in England, Italy and Spain and his CV is right up there with any manager in the game.
However it is the manner in which it is achieved is what irks many.
Arsene Wenger, Rafa Benteiz, Jamie Redknapp, Pep Guardiola and just about everyone associated with Barcelona are just some who may not hold the 51 year-old in the highest regard.
Anders Frisk retired from the game after accusations from Mourinho after a fiery Champions League tie at the Nou Camp.
Ronnie Whelan and John Giles have vocal in their criticism this week, with the RTE pundit saying he “hates” Mourinho’s personality in light of his histrionics, most recently witnessed at Anfield last weekend.
The flip-side to his box-office quality and entertaining interviews is an unsavoury element to his criticisms and general behaviour.
Chelsea fans will suggest that silverware is all that matters and as long as the trophy cabinet is filled regularly, his indiscretions will be entertained.
Failure to do so could well change those levels of tolerance.