A true footballing great but, as others have said, the game started going past him during his last, last year at Chelsea. In many ways I think the awful incident with Eva Carneiro broke the mystique around him and he's never quite been the same since. The ultimate Mourinho team were that treble-winning Inter side from 2010 and he's never captured the same magic.
Something changed in him when he went to Madrid, in my opinion, and that moment with Carneiro was the first big nail. As much as he was able to produce the goods in Spain and for a bit on his return to Chelsea, his victories have become smaller and less significant. It's been 13 years since he last won the Champions League, six years since he last won the Europa League.
He was a bloody excellent pundit during his brief stints out of a job. You can tell he's a proper student of the game. I'd watch Sky Sports pre-match build-up more often if he was on it regularly. It's always worth listening to what managers like him have to say about the game, especially someone who influenced it as much as he did between 2002 and 2006. But I think that's where he belongs now rather than on the touchline.