My theory is just that he's too stubborn to change his style based on the players he had. He got this reputation as a brilliant defensive manager who wins 1-0 all the time, but he was always able to build on players like Carvalho, John Terry, Makelele. You can't rely on clean sheets when you have Davinson Sanchez, Eric Dier, Serge Aurier... But it's like José's mindset is "my approach works and it will again". If we'd have bought some top centre back for him it might have been better, but we're not a club that can throw money around like his previous ones. It's just a mismatch of club and manager I think, and he's past the point of no return. We have a superb attack but they know they have to score 2 or 3 off about 5 chances at times to win a game and it's not sustainable.
You can argue the man management thing, but then I think Dele deserved to be out in the cold because he was pants for the previous year, plus easing in Bale slowing actually seemed to work as he suddenly hit some form. So I'm not sure if any players can feel hard done by in that respect. I just think it's too much to expect this defence to keep clean sheets, and the forwards to score 70% of their chances, and they're all jaded because of it.
Some really good points. On the man management issue, I really do dislike it when Mourinho lays into his players in public. Don’t get me wrong, some may react positively to it, but certainly not all. I cited Luke Shaw as an example but there are certainly others.
Anyone who has ever managed a team of any sort knows that, routinely, you just don’t do it.