I’ve noticed this pattern with Mourinho’s style of football after his Inter tenure where he comes into a club and is actually pretty proactive and attacking until a particular event goes unbelievably tits up for his team. After Inter, where his decline began after two years of massive success culminating in the CL win in 2010, he went to Real, Chelsea, us and then Spurs.
At Real, while his team still scored 105 goals in La Liga in his final season, he shifted to a more defensive game after the Bayern SF loss in the CL in 2012. The 105 goals only came because of the unbelievable attacking talent he had in his ranks. All of us could have got that Real team to a similar amount of goals that season, and that isn’t an overstatement. I mean, Ronaldo, Benzema, ADM, Ozil and Higuain as backup! Then, at Chelsea, it was the 5-3 and 2-4 debacles to Spurs and Bradford respectively. Over here, it was the Pool game where he inexplicably let an off-form Pool team dominate us. Then, finally, at Spurs, it was the 3-3 bottle job against West Ham.
Therefore, this is why he will never be as successful, or even successful at Spurs or any top club bar PSG where titles are guaranteed for any manager, until he switches it up. He is desperate for any excuse to move to a defensive style of play, and until that changes, he is nothing more than a mid-table manager.