Basically, there's this romantic notion that a good manager is going to thrive wherever he goes, notwithstanding the context he is working in. Utd is currently undergoing massive change from top to bottom, and while I believe Ineos is on the right track with the blueprint they have and the people they're recruiting, it's also too early for this target operating model to be fully effective. McKenna is, for all his promising talent, still very young in the position and I don't believe it would be a good move for him to arrive in such an unsettled massive organisation. Maybe in a year or so, when the upper echelons of the Ineos blueprint are effective, why not. In the meantime, a confirmed manager is needed to navigate these transformative times.