I suppose it depends on how long a list of HW's you're working with, he'd make a top 500 HW ATG list. I mean I don't generally go above top 20 with these sorts of lists, but even with the people at the tail end if my top 20 like Charles or Patterson you'd have a hell of a ****ing task on your hands justifying Haye above them. Even with Charles doing his best work at LHW he still holds more weight in this sort of list than Mr Haye.
He would have a serious case for top 10. I would have him around 9 because, it would be an achievement.
If he beats Wlad I’d put him in around 5-6. Unified 2 weight classes (how many fighters currently done that?) The 2 weight classes he unified would be the most difficult in terms of amount of weight to put on and size of opponents faced (e.g. unify lightweight division @ 135 then unify JWW @ 140. 5 pound difference between weight put on and opponents weight, compared to Haye, cruiserweight @199 then at heavyweight @ 215-220 and more importantly the opponents have no limit, Valuev aside usually giving up around 25 pounds Would of collected the ring title @ 2 weights. One of the highest KO ratios Hardly any fighters can match this.
I'd probably have him about 10th/11th IF he were to win. However, it would depend on the manner of the win as well, for example stopping him convincingly and early could posibly bump him up a few extra places. Mine would probably look something like this; 1.Manny Pacquiao 2.Floyd Mayweather(now that he's back) 3.JMM 4.Sergio Martinez 5.Nonito Donaire 6.Bernard Hopkins 7.Carl Froch 8.Giovani Segura 9.Miguel Cotto 10.Haye/Bradley/Gamboa