Well I say no way, you need to pressure Wlad to defeat him, just how Frazier did Ali and Marciano defeated jersey Joe and Dempsey/Willard. Haye is not a pressure fighter he is a counter puncher.
Vlad really was drugged in the first Brewster fight, check out all the evidence! Esp. the Judd letter/letters...........
I am convinced he was either drugged or ****ed up his steroid intake (yes, all fighters take peds, including your precious mayweather). So Haye had a chance to beat him if he knew Wlad was going down on his own and played the waiting game. Otherwise, if he took 1/10 th of the shots Brewster took he would be R.I.P
He'd have a better chance than against the current version of Wlad. But with Haye's chin I can't see him lasting long, Brewster took a lot of punishment before Wlad gassed and there is no way Haye takes anywhere near as much as Brewster took without getting KO'ed. So yeah Haye could win but it's a long shot and he'd most likely just get KO'ed early. Wlad is simply the better fighter, too big, too fast, just too good.
I believe he was drugged and thus no plausible comparison with what haye can do can be made here. BTW even a drugged Wlad won the first 4 rounds hands down.
That Wlad kocks him early, but Haye would have had a slightly better chance of a KO than he did against prime Wlad Saturday.