Emanuel Steward, Wladimir Klitschko's trainer, says the title showdown between the world champion and David Haye is on.

Steward on Wednesday said Klitschko had told him the contractual details of the fight with the former undisputed cruiserweight champion were being finalised - various minor points have been under discussion in recent weeks - with London's 02 Arena the likely venue.

"Wladimir called me last night to said 'Emanuel, what size ring do we want, to put in the contract," Steward said.

"I said '20 foot' and he said 'that's all I need to know because we're finishing up the contract'.

"So based on that it must be in its finalised stage and it must be on.

"It will probably be in the O2 Arena and I'm quite sure it will be a big sell out. That's where it needs to be."

Haye, 28, was initially linked with a challenge to the WBC title belt currently owned by Klitschko's elder brother Vitali but Wladimir told a German newspaper last month that the siblings had flipped a coin to see who would meet the Londoner in a June 20 showdown.

Steward said that accusations his fighter had been running scared of Haye were unfounded, rather the delay in getting the fight on was down to the challenger.

"It's never been a case of anybody being afraid of David Haye, just that he wanted to negotiate as if he was the champion and that was the problem," Steward said.

"But I guess that's all sorted out, I knew it would.

"I think we're in for a very exciting fight. It's the first fight (Klitschko) that he will have fought with someone that he's going to be excited about. It's a high-interest fight because of David Haye. He's a colourful guy and an exciting fighter and he's going to make Wladimir have to fight and I like that."

Steward was in New York to promote the next fight for Irish middleweight prospect Andy Lee, whom he trains at his Kronk gym in Detroit.

Lee (16-1, 13 KOs) will face three-time world title challenger Antwun Echols (31-9-4, 27 KOs) on March 16 at the Madison Square Garden Theatre.

Co-feature on that card will be Belfast's former WBC bantamweight champion Wayne 'Pocket Rocket' McCullough (27-7, 18 KOs), the 1992 Olympic silver medalist, against an opponent to be announced.