As someone who absolutely thinks he's the man for the job, I still think Jose's made mistakes. It's early days, but Lindelof has looked pretty average and at times quite petrified and slow. Lukaku is a goal machine for the right side, but buying him might limit our play too much, again, early days. I also think it was a bit of a blunder by him when he said if the league was over he'd rather go on holiday (when in fact, the league is pretty much over but he needs to be motivating his players, as that's what he gets paid for).
His old school stance on injuries is also a bit worrying. I can't help thinking that Smalling would have, under normal circumstances, left the pitch against Leicester when he was too injured to move freely.
That being said, I think Jose has often times said positive things when he's probably trying to navigate his way leading a team with too many average players (which even Moyes correctly identified, and is quite possibly the only thing I agree with that man on, even if it was a terrible idea for him to voice those thoughts at the time given his position).
We simply need a new backline. People talk about the spine of our team being solid, in de Gea, Bailly, Pogba, but a spine of a team rests upon a solid defence. We've all been hot and cold over the last 5 years with Smalling and Jones. Same with Rojo, for the last 3 years. They are all injury prone. And we have not got actual full backs or actual wingers. Jose was doing well with the team up until Pogba got suspended. That completely derailed our season and shows how utterly dependent we were on him with absolutely no quality depth in midfield.
Hypothetically, if Jose was sacked at the end of the season, and a new (and very possibly lesser) manager came in, do people think he'd work some magic with the players we've already got without feeling that he needed major backing to compete for major trophies?