I don’t think his stints are stand out, no. Only when you consider how old he was, as I said. If it was just some 50 year old manager doing those things at those clubs, it wouldn’t be particularly noteworthy.
As for the bold, absolutely correct I would rule them out too. Because I’m going off the basis of INEOS saying they want the best in class and to be “the best club in England, Europe and the World again”. Ferguson, Klopp, Guardiola, Mourinho.. these aren’t managers who did just alright at clubs. These are managers who were seriously impressive and established before coming to England. Don’t know why people keep pretending that we can just get another meh manager and become great again. United need the best available