By Ruslan Chikov

Former unified lightweight champion Nate Campbell (33-8-1, 25KOs) is not going to retire. He plans to fight on the undercard of the big Moscow event featuring a cruiserweight clash between Denis Lebedev (21-1, 16 KOs) and former four division champion Roy Jones Jr. (54-7, 41 KOs). Jones-Lebedev headline sa huge international card, promoted by Vladimir Hryunov, on May 21 at the Dynamo Arena in Krylatskoye. Campbell was last seen on the April 9 Las Vegas undercard to Erik Morales-Marcos Maidana. He lost a ten round decision to up and coming Danny Garcia. Campbell, 39, has been defeated in his last three outings. Hryunov told Alexander Pavlov that Campbell's opponent has not been determined.