As Barry stated when the Vaughan rumour began, why sell now before the new stand in built and revenues increase. As a saleable asset, it'll be worth more after that. Why not hang on, maximise your value, while securing the rent they want for BP? They're businessmen, they want a return. I don't doubt Simon wants well for the club, but not at the expense of his, nor Gazal / Blitz's bank balance.
I often wonder whether a prospective new owner would also want the land? If I won Euromillions, I can assure I would. I wouldn't want to be at the mercy of 3 capitalist businessmen would could my rent up regularly / kick me out of my home to redevelop the land at the drop of a hat.