Arreola vs Haye. We know that Povetkin and Dimitrenko, and are world class and where they stand, but to me, still, these other two are still very untested and the true test for each would be each other.
I think I'd like to see a Haye-Peter or an Arreola-Fields fight first. Despite having losses recently, I dont think you can count either Peter, Rahman, or Fields out any time soon. In fact, I'll say it here first:
Look for Fields to improve and get a fight with Valuev. And Beat Valuev.
I agree that neither man has proven what he can do on the world class level, but no point in wasting either of their 0s on eachother. At least from a business standpoint, these are two of the few guys who can get people excited about a HW title fight. Just let them fight other established world class guys.