Former heavyweight champion Evander Holyfield has warned cruiserweight David Haye not to bulk up too much when he steps up to the top division.

Briton Haye plans to pile on a couple of stone in six months when he turns into a heavyweight after his showdown with Enzo Maccarinelli on Sunday.

But Holyfield told Inside Sport that could be too much weight to gain.

"Weight doesn't make you a bigger puncher. If he is not careful, he will get too heavy," he said.

Holyfield started his professional career as a cruiserweight before winning the world heavyweight title four times in a superb career.

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Now 45, Holyfield fights on looking for a fifth top weight title success as well as a possible third bout with Mike Tyson.

But he ruled out a fight with Haye or Maccarinelli.

"At this point of time, I'd rather fight someone I've seen before and seen when I was champion," he said.

"I'm not going to start going after the young guys. If I do that, I'll never retire."