Even if Brum and Disney are interested, neither has parachute payments and are bound by the same financial rules as us. 85% etc. I don't think they'll be out paying us - Disney don't have a great deal of high quality players to sell and make money and their general turnover will be considerably lower than ours - smaller ground , smaller local fan base etc - although I guess sponsorship money could be a factor, and I'd guess that The Blues are comparable to us in terms of turnover, if not size of the owners bank balance.
Maybe I'm missing something re: the new financial rules, but to me it seems like if a club hasn't got parachute money, they can't buy their way to the top.