@edcunited1878 already wrote a very thoughtful explanation for this
https://www.redcafe.net/goto/post?id=25065304 There is no way whatsoever of qualifying for a managerial job of any large organization (esp. major club) without any such previous experience.
Especially when said club is in shambles and needs vast experience navigating the rebuild. He is unqualified, plain and simple, any chances of success here would be equal to that of winning a lottery. Possible - yes? Likelihood - extremely low.
It's like appointing somebody who was a secretary to Microsoft's CEO as the CEO of Google and then asking - why would it not work. Because secretaries, generally speaking, are not doing CEO's jobs, even if they are in close proximity, and maybe you should have some relevant managerial experience, before you try to run a major organization.