Couple things on this very common misconception by those that are supportive of Ratcliffe in any and everything he does in this process. The first thing is, this isn't primarily a business deal for him as it would be a bad one I'm sure you'd agree. It's obvious that this is some sort of personal vanity project that has the huge added benefit of having Manchester United added to his portfolio (a big deal for any business) and not only that, he gets to play with it in the form of being a Super CEO where he has a degree of control over who's employed in the football department. He gets to play with his partial investment and take credit for any success that might come our way. It's almost like Make a Wish and multi-billionaire-bucket-list kind of scenario where the guy gets his wish in the form of an extremely expensive, unnecessary opulent purchase because why not - he has everything else and you can only enjoy so many super yachts. He's buying a play thing that he can play with.
As for the Glazers? They own the asset so of course they have carte blanche - it's theirs to do with as they please as long as it's in the best interests of all shareholders and not just themselves. They will continue to operate the way they always have been and in no way will they ever sign on to selling the club in its entirety to Ratcliffe at it's current valuation much less Ratcliffe buying them all out at some ridiculous future valuation because why not pay it now? They just want a useful idiot that's willing to provide investment to enable them to stay and continue to open personal credit lines against their shares and take dividends.
In order to understand this process you have to really look at the psychological aspect of all individuals and their motivations. I still think, even now that a full sale is an option despite the media smashing me over the head on an hour-by-hour basis that Ratcliffe will be announced. They may be right, but Darcie, Edward, Kevin and Bryan all want out at a premium, the other shareholders want out of this sinking financial ship at a premium also. Joel on the other hand is working tirelessly to get everyone else on board with his plan so I think this process has some way to go yet and nowhere near as close as the media would have us believe. The process has been a farce and with it so many opportunities for litigation. Glazers are blinded by their own greed and it's starting to catch up with them.