WBC lightweight champion Devin Haney has made it clear that he won't fall for any of the mental games from his upcoming opponent, George Kambosos, who holds the IBF, WBO, WBA titles.

They will collide in a full division unification on June 5 in Australia. 

A crowd of 50,000 - mostly made up of pro-Kambosos supporters - is expected at Marvel Stadium.

Kambosos is making the first defense after picking up a big upset win over Teofimo Lopez from last year.

He used a lot of mind games to get Lopez riled up in the weeks leading up to the fight.

Haney is playing it cool until they step in the ring.

“He can pump himself up to whatever he thinks,” Haney told Fox Sports. "On June 5th, I will show it. I will show everything that I am made of and walk out victorious. He’s not supposed to have any respect for me or anything like that, because you’re going in there, we’re going in there to fight and compete. I’m going there to win and to take his belt. So if he doesn’t have any respect, then that’s no problem.

“This is a huge opportunity for me, you know, just to become the youngest undisputed champion. This is bragging rights. The world has said so much, the boxing world has said so many things, all this and that. This is finally my time to prove the doubters wrong and show my fans that I am the real deal.

“It is my time to prove that I am the best of the bunch and nobody put me into place. I earned it, just like I will earn these belts. At the end of the day, this is a fight for the history books, the youngest undisputed champion. My kids will remember this moment, my family will forever have that.”