I did read a while ago that there has been a massive revaluation upwards in Premier league clubs. I think it had been mentioned that Crystal Palace had been try to sell up for £250m or so but due to (I think) the valuation on Chelsea they had revised that to £600m. Basically it looked like even a middling Premier league club like Palace was valued at £500m+.
Haven't seen the Ipswich report but if the price goes up to £100m+ for 40% if they are promoted, that seems consistent with these revised valuations.
It feels like there's a massive bubble in Premier league clubs. American investors are most focused on the business opportunity and I suspect a lot of them are looking at the potential for the Premier league to become a closed shop which means they need to buy before that happens.
As far as I can see it you get
business investors - they believe they can increase the worth of the club and make a nice profit. Some of those are actual sports business focused and reckon they can improve the club enough to increase its worth while others are just about extracting maximum return.
vanity investors - billionaires who see it as a shiny thing to have and which will possibly add value to other assets they have
sportwashing investors - treating the club as an expense to provide marketing for themselves
Influence investors - billionaires buying influence at the top level of UK society
crooks, grifters and chancers - 'nuff said
There are very few old style local owners such as Gibson.