Honestly don't see what all the fuss is about. The buy-in from Jim is essentially to get the Glazers some extra money right? They're not going to give him proper control of anything and there's nothing to suggest he'd be any less useless and money-grabbing than the other Glazers anyway.
So far it seems like he'll bring in some of his own people (which could be better than the current rabble maybe) and the Glazers will make a few hundred million more from the club, and then it's more-or-less business as usual.