Unbeaten prospect Stevie McKenna believes Olympic gold medal winner Luke Campbell will defeat rising star Ryan Garcia.

The World Boxing Council has ordered Campbell and Garcia to face each other for the vacant WBC interim-lightweight title. The negotiations have continued to play out, with both sides pushing to have the contest take place in 2020.

McKenna has been a sparring partner in the past with both boxers.

Based on his spar experiences with both men, he says Garcia is not a big fan of pressure.

"It was a great spar, [Garcia is] very fast," McKenna told Sky Sports.

"He's sharp, but I did four good rounds and I laid it into him. It was good work. It's a fight I would also like down the line. He didn't want any more, put it that way. He found it hard to handle my pressure. I'm a very come-forward, aggressive fighter and it was different for him."

McKenna, who has a 40-0 record with all of his wins coming by knockout, is backing Campbell to not only beat Garcia but to win by knockout.

"Right now I would take it [Garcia fight], so I would," McKenna said. "Luke is looking really sharp. I think Luke would win by stoppage. He's [Garcia] at the stage in his career where he's 20-0, he has to take these fights, if he wants to make it to the top. It will be an interesting fight to say the least."

Campbell has a clear edge in experience. He suffered competitive decision losses to Vasiliy Lomachenko and Jorge Linares, and feels confident in his ability to overcome the younger Garcia.

"He is a big name, he draws a lot of attention. He looks like he carries power and he has speed. We'll soon find out, won't we?," Campbell said.