To be honest, I personally wouldn't expect that, anyone that watches English football can tell you which players can't cut it, Mustafi, Xhaka, Sokratis Luiz (at CB), Kolasinac, they don't need to spend months assessing these guys, they just aren't good enough point blank.
It worries me considerably that Arteta wanted Man City to sign Xhaka and that he's been so complimentary about him to be honest, the guys just isn't up to it and if someone who has seen him play can't come to that conclusion I can only think there is something wrong with their eyesight.
The facts are there, we've struggled this season and for good reason, we had a manager who didn't know what he was doing and some absolute calamities in defence, those are the facts, what we need is better quality players, the last thing we need is another manager who insists on using these guys moving forward, they need to be in the past, they aren't part of the future, not if we want to achieve anything anyway.