The former heavyweight champion of the world takes on Bellew at the O2 on May 5. It is a rematch of their fight last March, with Haye’s corner throwing in the towel in the 11th round after their fighter injured his Achilles. Next month’s bout is Haye’s first clash since that loss with the 37-year-old having only returned to the ring in 2016 following a four year absence. But there’s no guarantees Haye will enter the ring again after the upcoming fight says the man himself.“I don’t want to be known just for selling tickets and pay-per-view television,” Haye told the Evening Standard. “I’ve done that throughout my career. “How about the merit of my work? At 37, I am thinking about how I want to be remembered. “This may be my last fight even if I win. If I don’t win well and feel good about it, I won’t be carrying on. So the focus on what I have done in the ring is more important.“I’ve done the same things to crank things up for so long that I could slip back into it. It will be tough to avoid it. “So it’s another challenge for me to treat Tony Bellew as I would anyone else and not hurl abuse at him.” David Haye has won 28 of his 31 fights. He became WBA world heavyweight champion in 2009 though lost the title to Wladimir Klitschko two years later.