I don't think that anyone believes that EFC could finance a £500m stadium under their own steam alone, or anything remotely close. We're bottom of the financial fairplay league and have predominantly posted losses for years.
To date, we still haven't officially secured any funding for the stadium construction (years into the project). I think it's fair to assume that the only way this stadium is getting built is by a massive injection (direct or otherwise) from our owner or his backers (via sponsorship).
The fact that it still hasn't been revealed how this is all supposed to stack up financially is a real concern. That must surely only be increased if the expected stadium sponsor (to the tune of £30m for the opportunity alone) is now out of the equation?