WBC heavyweight champion Vitali Klitschko has insisted that Manuel Charr will challenge him on Saturday night, branding him "the new generation of heavyweight boxers".
The 41-year-old has not fought since he beat Dereck Chisora on points in February, and he believes that Charr can pose a significant test to him in Moscow.
Klitschko said: "I know that some people are not taking Charr seriously, considering him a boxer without a big-sounding name and serious experience.
"However, he represents the new generation of heavyweight boxers."
Charr, 27, is unbeaten in 21 fights, but he has yet to face any significant opponents.
