But what had led to his departure? And what, specifically, led him to claim that he felt "betrayed"? Well, star reporter Fabrizio Romano has an idea. He exclusively reveals that a certain Andriy Shevchenko played a far bigger role than many of us would believe.
As is well in Italy, a name like Shevchenko's counts for a lot, especially when you consider that the former Milan star has a very sharp intellect. The Ballon d'Or winner has found himself sitting next (and giving advice to) Roman Abramovich more and more in the past few years, and entering the Russian magnate's confidence. His presence in Chelsea's Sky Box is now a given.
Some rumours even have the Ukrainian communicating Abramovich's ideas and opinions directly to the players, without Mourinho's prior knowledge or approval. In an already divided locker room full of egos, one can imagine the effect this could and did have. Mourinho's departure certainly owes something to it.
Now, Shevchenko could even find himself being given a managerial role inside the club.
The facts are there for all to see: the dressing room is full of malcontents, between those who have burned all bridges with Mourinho (Fabregas and Costa, to name two), to those who are playing little, those who feel neglected and marginalised, and those who are simply playing badly.
His communication with Mourinho non-existent - the transfer market was a big bone of contention, especially the Cuadrado and Falcao deals - Abramovich's anger led to him to try the Shevchenko card.
In many ways, Jose Mourinho knew that this Chelsea team wasn't his any more. And yet, ironically, even his decline and fall had a... Special feel to it.