Problem with Welbeck is really the larger problem. In isolation, not a terrible deal - not hugely expensive for a still potentially promising young and physically gifted (not skills mind you) English striker.
The problem is that we have this pile of meh players that don’t take us to the next level. Welbeck, Walcott, Ox (bye), Xhaka (ugh), Coquelin, Ollie, EL Neny, Mustafi (jury out I suppose), Chambers, Debush, etc.
Now some of these still have a chance, but do any of us really think they will grow into top players for us, let alone world class?
You don’t need 11 WC players, but you need a team of really excellent FT players to supplement the WC players and we really just have a massive squad of “pretty good players” - not very many in between the Ozil/Sanchez level other than perhaps Koss, Laca. We really need our youngsters to step up a bit and also augment with at least 1 more top player per window - with Sanchez and Ozil potentially leaving, well that is a whole different issue.
I left Cazorla, Wilshere off the list b/c of injuries and Iwobi while I don’t think is good enough yet, at least he is showing promise and is still very young - I don’t mind having 1 or 2 of these types getting minutes, especially while we aren’t relevant for the CL or title.