- Vitali Klitschko v Dereck Chisora
I won't back down like Haye - Chisora
Chisora will get his shot at a heavyweight title when he comes up against the WBC champion in Munich at the weekend. It was compatriot Haye in a similar position against Vitali's younger brother Wladimir last May, as the Ukrainian romped to a one-sided points decision after a bout where Haye failed to apply any real pressure.
Chisora is a heavy underdog going into his own chance of glory, but is adamant he will do all he can to make Klitschko feel uncomfortable.
"I'm in a great place mentally," Chisora said, "and being out by the lake [in Tegernsee to train] has enabled me to focus on what I need to do, and to get away from the tricks the Klitschkos like to pull on you behind the scenes.
"Some people shrink away in these situations - I'm thriving on the big occasion. Put it this way, don't expect me to shy away when I step between the ropes. I'm not going to do a David Haye and run away from Klitschko when I get in there.
"I have come to fight. I don't talk and then not deliver - like Haye."
Klitschko expects to face a stern examination from Chisora - saying that is one of the main reasons why he decided to give him a title shot.
"David Haye didn't want to fight," Klitschko said. "He just kept running away from my brother. I expect a better fight from Dereck Chisora. He's actually a fighter."
Nevertheless, the 40-year-old hopes to lure Haye out of retirement if he successfully bypasses Chisora - although he wondered aloud whether the 31-year-old has a true fighter's hunger for the big occasion.
"David Haye is so unpredictable," Klitschko said. "We tried to make a deal and I hope the fight comes through, but right now we are miles apart from making the contract. I hope that after Dereck Chisora, David Haye changes his mind and I can give him a chance to fight for a world title.
He added: "Every fighter has a dream to fight for the world title. Every time, I say to David Haye: 'Please fight me. Please fight for the world title, it's the most prestigious title in the world.'
"If he doesn't want to do that, OK, [but] he always tries to find excuses why fights do not happen."