Yep., unless Simeone wins the double ....
Even then I'd be surprised as Simeone is not the one to play "attractive" football and I'm sure our board and Roman knew what kind of football Mourinho will play when they brought him back, must be discussed before signing him on a long term, highly paying contract.
Plus not many Chelsea fans crave football played "the right way". With United seemingly out of the picture for next 3-4 years (or I'd like to think that, at least) we have a genuine shot at dominance. While City seem to have endless resources and unmatched ability to spend, they might not be able to match up to us for various reasons, of course I'm not talking of domination like Fergie's United but close (for next 3-4 years). City aren't dominant in Europe, like Chelsea have been.
Also I'm sure by now he's learnt how much managerial instability has cost in the past, it was old guard, however much you may criticise them(AVB saga), that kept things going. Also, Mourinho has from the start been saying this year is for transition and he has a very young set of players, he has to build the team to challenge on all fronts from next season, which laughably has been labelled as "mind games" or him "playing down chances". Which is not the case, he always follows up with "we will be challenging with full force from next season", which no one seems to notice.
It is also evident with his comments like "City have a team to win now, players in their primes, we have a team to win in future." These comments, and the fact that he's agreed to work with a Director of football and is happy with limited control, indicate he and board both knew the aims for this season and long term plan. Emenalo had been collecting players for Pep Guardiola, all these playmakers, no solid power and pace.
Matic has been a different signing, let's see how summer goes, IF the rumours of Vidal (which I don't believe) are true, and if we really are interested, it'll be clear which direction the club wants to go in. If he finishes second season without major trophy, then maybe I'll consider that as a possibility.