i think it goes deeper than that, holyfield is haye's idol. im guessing they could make the fight sell in the states, it would be another low risk medium reward fight for haye. and to make it worse, the state of the division is bad that you can almost guarantee wlad and vitali won't be fighting much better opposition so he will use that as justification. the sad reality is, he has now made enough money from the sport, and doesn't need the fight. his ego is to big he doesn't believe his legacy needs it either.
After Wlad beats Chisora and makes an official callout on Sky (or wherever it gonna be casted) Haye stands no place to hide and I dont think even his British fans let it go then.
he's essentially saying he doesnt need the fight, and he will only fight if they give him the right money. which im guessing to him is more than 50%
what can be more egotistical than turning down a heavyweight unification title match because you think you don't need it?