I don't agree with these hard and fast notions. I still think we need continuity and thoughtful progress rather than another unbalanced attempt at surging forward, with marquee signings who aren't quite right, or a temporary rock star manager.
When Wenger left we were always going to struggle a bit, but Emery was the wrong appointment, a slightly distant, junkyard hobbyist who'd rather adapt his approach to the conditions than build.
The situation at United remains exemplary and shows how a rational approach with gentle expectations is vital. Even if we're replacing Arteta I'd be disappointed if we went for a Tuchel or a Conte. I'd actually rather have a journeyman learning on the job like Arteta than a bristly, self-absorbed ego who thinks he's bigger than the project.
Whatever we imagine about Arteta, I don't believe he is immodest—that's why he depends on rules, they create an authority he himself does not have to justify day by day.
In the light of this problem of manager turnover, separating the coaching from the squad management has been a great step regardless of Edu's report card.
To me Potter and Postecoglou are the types of leaders we should be looking at if things continue to be a bit troubled over the next few months. More dynamic coaches and more unifying, positive figures than Arteta, people who understand human nature a little better, but who retain enough modesty to feel honoured to be at the helm of one of the greatest football clubs.