These all of the players that need to be replaced and it's necessary to find an upgrade:
Maguire, McTominay, Eriksen(no legs), Lindelof(too passive, not good enough), Martial, Casemiro(no legs anymore), Varane(fitness issues), Lindelof(not good enough),
Bruno Fernandes(no ball carrying, ball retention ability whatsoever - this is arguably the most important one), Dalot/Wan Bissaka(one of them), Sancho(if he's fallen out with the manager, but regardless), Pellistri(probably not good enough)...
Haven't even mentioned toothless Antony(who might end up in jail, by the way) and the eternal right wing problem we seem to have...
I've counted about(at least) 12 of them. That's the minimum amount of players we need to replace in order to seriously compete with the best clubs in the world - mainly City, but also Bayern, Real, Arsenal, Liverpool, Barcelona, Brighton
, even Spurs(who are better than us at the moment)...