David Haye ready to work against Manuel Charr for title chance
Former WBA heavyweight champion David Haye has said he will have to "train as hard as I have ever trained" for his June bout with Germany's Manuel Charr.
The Briton's fight at Manchester Arena on 29 June is his first fight since his win over Dereck Chisora in July 2012.
"He's young, strong and hungry and he genuinely wants it," said Haye of his 28-year-old Lebanon-born opponent.
"I'm willing to put the work in. I'm ready to do what needs to be done to get to that mega fight."
Haye lost his WBA belt in July 2011 when he was outpointed by Ukrainian Wladimir Klitscho in Germany, and subsequently retired from the sport.
But the 32-year-old returned to the ring to beat Chisora last July and hopes to force a fight against either Klitschko or his brother, WBC heavyweight champion Vitali, by putting himself into a mandatory challenger position.
The path to the Klitschkos, who own all the division's recognised world belts, begins against Charr in Manchester.
The Londoner told BBC Sport: "I want to be the heavyweight champion again and to do that I'm not going to get a direct route to the Klitschkos, like I was told I was going to, like I believed that I would, a few months back.
"I'm used to having these big fights, these mega fights. If it takes this to get to that then I'm willing to put the work in.
"It's nice to say that on 29 June I'm going to do it again. It's going to be a great fight."
Charr has fought three times since Haye's bout last July, suffering a controversial defeat by WBC champion Vitali Klitschko before bouncing back with two victories to take his record to 23 wins with just one defeat.
"He was very hard done by when he got stopped on a cut [against Vitali Klitschko]," added Haye.
"I'm anticipating a tough guy, someone who puts on a great fight. He's going to be in my face and throwing punches from the start.
"He's not the most technically gifted performer out there but what he lacks in skills he makes up in sheer heart and determination and I'm anticipating a tough, rough fight.
"As long as my sparring and training is smooth, I don't believe why ring rust should come into play."
During a respectful news conference, Charr said he believed Haye was the world's best heavyweight.
"Vitali Klitschko says every time that he wants David Haye, but he is afraid of David Haye, who, for me, is the number one heavyweight," said Charr.
"I respect him. He is a great fighter."