As previously reported on BoxingScene.com, Luke Campbell will fight Jorge Linares for the WBA and WBC Diamond lightweight belts in Los Angeles on September 23.
The 2012 Olympic champion has signed up for the toughest test of his professional career against the three-division champion from Venezuela.
Linares is best known to British fight fans for beating Anthony Crolla on two separate occasions.
"It's an honour to be fighting Jorge Linares for the WBA World title, WBC Diamond and Ring Magazine titles in one of the biggest fights in the division," Campbell said.
"I've worked my way from Olympic champion to the number one spot in the WBA and WBC rankings, and I feel now is the time to take my chance."
Linares has a 42-3-0 record, with Campbell being 17-1-0.
Linares is not taking Campbell lightly, but he believes that they are on different levels.
"I saw his last fight here on the Joshua v Klitschko night and he is a beautiful fighter, but now I need the biggest fighters - Mikey Garcia, Vasyl Lomachenko, Luke Campbell or Terry Flanagan - because it is the best moment for my career," Linares told Sky Sports.
"He has a very good record in the amateurs and is also moving into professionals but you know, this is a different level. I am a four-time world champion right now, but it's good for him, good for me and good for the UK's boxing."
"Now I am looking for big opportunities in America because three times I have fought here in the UK, so now I am looking for something like pay-per-view, or HBO, which is why I am fighting in America. I don't have a problem with that. Before I had the same story in Japan, now I need it in the United States, after having it in the UK. It's a good opportunity for me and that's why I am looking for big fights, big openings. I know nothing is easy. Everybody told me Luke Campbell is an easy fight, but nothing is easy. But now I am looking for big fights, not 'semi-finals', I am looking for the main event, the 'final'."