Bellew (30-2-1, 19 KOs) beat his English heavyweight rival more emphatically than he did past year, flooring him twice in the third round and once in the fifth.
But some felt the outcome was stained due to Haye suffering a severe Achilles injury in the sixth round.
Meanwhile, Bellew has options to fight big names at heavyweight or return to cruiserweight where he has already talked about taking on undefeated (although now retired) superstar Andre Ward.
Bellew stopped Haye in the 11th round some 13 months ago and again boxed a clever fight. He is a pound-for-pound great but I can match him on the inside, and he has never fought anyone who could do that. I know I can do it.
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The victor of the World Boxing Super Series cruiserweight final between Oleksandr Usyk and Murat Gassiev would be a tantalising prospect with all the belts on the line, but the fight would not offer a huge financial incentive. But now, after an even better performance and even bigger buzz from the way he did the job, I can understand what David Coldwell is talking about when he said he would be happy to see him retire on the back of this win. Haye was the busier fighter in the first two rounds, outjabbing Bellew and looking like he's fully recovered from his injuries.
"When I sling the left hook inside, you're going out". Haye tried to force the action a lot more in the final minute, missing wildly with a combination in chasing Bellew who used his feet to avoid the punches.
Bellew's finishing blows were not anything murderous but after three genuine knockdowns, Haye did himself no favors flailing around as his man's punches came near. Haye lands a strong right hand at the end of the round. Haye slid down the ropes to the canvas, and when he got up, he was on spaghetti legs.
Bellew, the former WBC cruiserweight champion, was again considered the underdog but is enjoying the finest run of his career. The bell saved Haye from further punishment that round and he tried to regroup in the fourth.