Klitschko to defend WBC title against Poland's Sosnowski

"He is experienced, he is fast and he is a tough boxer who will try everything to take my belt. But I will not let it happen," Klitschko said in a statement. "I promise all fans an unforgettable evening."

"This is a dream come true," he said. "I was already training for the Harrison fight when I suddenly get the chance of a lifetime. Vitali is way past his peak," he said.

(Writing by Karolos Grohmann, editing by Pritha Sarkar)