Manuel Charr is confident of causing an upset when he faces WBC heavyweight champion Vitali Klitschko on September 8 in Russia. Charr will risk his unbeaten record from 21 bouts, while Klitschko, 41, brings an impressive record to the table having fought 46 times, emerging victorious 44 times and claiming 40 of those by way of knock out.

After Vitali, Charr has vowed to face former two division champion David Haye.

"I've been going through extensive training for the match," said Charr to Sky Sports. "I've competed in 21 matches and won them all. I've trained a lot with very strong boxers who are former world champions. Now I've this chance with Vitali Klitschko and I'm confident I'll win.

"It's well known Vitali Klitschko is famous for his patience, but I'm only 27 years old and have a lion's heart. I'll succeed. I'm determined to win. We'll see on the day who will win. I think the one with the bravest heart will win the match.

"David Haye came from a classic boxing background. He's a fast boxer, but I know the way to play against him there is a specific technique to be applied against him. He punches very hard but he makes many mistakes which can be used against him."