If we send out a team that contains all of Sa, Kilman, Semedo, Jonny, Neves, Moutinho, Neto and Raul, most would agree that there's a fair amount of talent there (and then there are others where mileage varies but they're not shit are they, apart from Hwang).
So either the manager can't motivate them or he just generally plays awful football, take your pick. Either way it's on him.
He's also cheap in Premier League terms so who would you look to remove, nearly all our squad who are better than anything any of us have seen in the last 40 years, or a manager with a CV that doesn't fill a side of A4 and who talks shit all the time. Tough one.