Not sure mate, they are a private limited company. They may have investors.
And yes they could take fees and dividends etc. But you'd have to imagine anything they could take out of United wouldn't touch the sides of the yearly payments of a £5 billion pound debt.
If Ineos take on debt to buy a company with a view to growing the company as an asset. It wouldn't make much sense to cripple it with debt it couldn't hope to service. Yes the Glazers did it but for a much smaller amount that United sadly could afford to service.
Having said all of this it's probably a moot point at this stage. I don't think Ratcliffe will be taking over.