I really dont think this team/squad is as bad as you're making out (José deserves as much of the blame with the way we have imploded this season) and TBH its probably not as strong as it was a couple of seasons back mainly because of Joses man management.
You could tell from the end of last season that he was seriously burning out his 'favourite 11' and a lack of rotation plus his effort of sending some fine players packing (Lukaku, KDB, Schurrle, Mata, Bertrand, Luis etc) was coming back to bite us bad.
Hopefully the next guy we get in can work on the same page as Emenalo/Roman and work with the abundance of great youth we have coming through as our academy and loan system is second to none. We just need to find someone who knows how to use it.
As great as a manager Jose is, he's never going to be a long term solution. Yes he'll come in and win you trophies but he'll also tear the place apart and go out in a blaze of glory. It's just his way.