We're a pretty shit squad at the moment, to be fair. I don't know what anyone could realistically be expected to achieve. We've wasted a lot of money and haven't really competently replaced, much less improved, a single position from the 16-18 squad. We've ended up in a place where one time bench options, like Moura, are required to play a song in the first XI.
Part of it is underinvestment, but most of it is just poor talent identification and development. We've spent shedloads on players like Sanchez, Lo Celso, and Ndombele which should be forming the spine of our next generation but instead are leading the downward charge.
I suspect a top manager could paper over the cracks and maybe get us in the hunt for 4th. But all that would do is give us an excuse not to strip this team to the bones and start over. Sell anyone worth two coins.