I think Bell has a good chance if he shows up like he did in the Mormeck fight, tough fight either way for both fighters
I don't know how good Bell's chin is, although from the Mormeck fight it looked like it's pretty good. If it's solid it would be one fun scrap to watch, I'd be undecided as to who would win.
Hard to knockout at Cruiser and before he showed signs of serious decline against Adamek. Bell is a guy who has been knocked down many times but always came back. Heavyweight could likely be a different story. I think age, combined with inactivity and a possibly fragile fighting spirit at this stage indicate that Bell is pretty much done. I think Haye would savage Bell at Heavyweight, probably by stoppage inside of five rounds.
Bell was serious KO master at some point of his career. So I would give just slight advantage to Haye in punching power and determination but Bell has more advantage in stamina and chin. I don't think this fight last 12 rounds, either Haye KO Bell in 4 or Bell KO Haye between 5-8. its 50/50 for me.
.... with Haye stamina? Be serious ... Haye KOes all of them early because he knows he cannot last to later rounds.
If they fought today, Haye would wipe the floor with bell... Bell is washed up as shown in the adamek fight... A prime bell would have not lost like that to adamek.. A prime Bell was an animal although he was inconsistent but he aways had a granite chin and he would have outhustled Haye and checked his chin... A prime Bell would have grinded haye down and knocked him out late in the fight.