Just chipping in on potential new owners: the issue is RoE. There are 3 reasons in my head to purchase our club:
1. Genuine fans being the hero. Do it for the goodwill, the love of United, the joy of being a saviour whatever. In this case your RoE doesn't matter.
2. Do it for sportswashing/ cause all your cousins have football clubs. This is the sugar daddy model, and RoE is again irrelevant.
3. Do it as a business venture. This is the one I guess we all want, but here's the catch - football clubs aren't a good investment, at all. Say a new investor could convince the Glazers to sell for just 2bn. And that they'd keep the debt (which obviously causes more issues). New investors would pony up 1.5bn or so for the priveldge. Maybe you view a football club as diversifying, so you'd be willing to settle for an RoE of maybe 5-6%. That would require annual pure profit of 75m. That's kind of best case. Assuming this is correct (
https://www.statista.com/statistics/383903/manchester-united-profit-loss/) we're nowhere near that consistently. And tbh, most investors right now would be looking for a damn sight more than 5%.
The Glazers crushed this by essentially having an infinite RoE. They spent 0 investing, so each dollar they take out is pure, glorious upside to them.
If there was an investor willing to part with 2bn to buy MUFC, the Glazers SHOULD snap their hand off, because investing that cash wisely would yield much better returns than United, and they'd of pocketed 2bn of profit off their initial outlay of nothing.