Vasiliy Lomachenko will defend his WBC, WBA and WBO world lightweight boxing titles against fellow former Olympic champion Luke Campbell in London next month.
He'll face Campbell, who defeated Ireland's John Joe Nevin in the 2012 Olympic final, at the 02 Arena on August 31st.
"Lomachenko is ranked number one pound-for-pound on the planet, so for me to fight a guy like that only encourages me more to be the best that I can be and it is exactly the level that I want to be at," Campbell said of the upcoming bout.
"I'm well aware of how good he is and what he is capable of doing, but I'm also well aware of what I can do and what I'm going to do.
"I think that I can knock out anyone that I hit right, I believe that I am one of the biggest punchers in the lightweight division.
"This is going to be the toughest fight of my life and I'm preparing for it, physically and mentally."
Ukrainian Lomachenko is set to return to London, where he won the 2012 Olympic lightweight gold.
"This is a fight for history because my goal is to unify all of the belts in the lightweight division," Lomachenko said.
"Luke Campbell is the next challenge for me on that journey. He is an excellent fighter who I remember well from the 2012 Olympics. He has a difficult style, and I cannot afford to overlook him."
Promoter Eddie Hearn said: "I truly believe Luke Campbell has a fantastic chance here on home soil to upset his fellow Olympic gold medallist.
"This will be a huge event, not just in Britain, but around the world."