WBO cruiserweight champion Enzo Maccarinelli will make his second title defence on 7 April against American challenger Bobby "The Machine" Gunn.
Enzo Maccarinelli will make the second defence of his WBO belt
The pair will clash on the undercard of Joe Calzaghe's WBO super middleweight title defence against Peter Manfredo.
Gunn is based in Hackensack, New Jersey, and holds the IBA world title after beating Shannon Landberg inside seven rounds last September.
The 33-year-old Gunn now has a record of 16 wins (13 KO) and two losses.
606 DEBATE: How will Maccarinelli fare against Gunn?
Maccarinelli, 25(19)-1, had hoped to meet rival British fighter David Haye but the two camps were unable to reach an agreement.
He may have a set of machine guns but I have weapons of mass destruction in my hands
"I don't know a lot about him, but I hear he comes to fight and has a big punch," Maccarinelli told BBC Sport Wales.
"He may have a set of machine guns but I have weapons of mass destruction in my hands! It's going to be exciting while it lasts."
Bonymaen-man Maccarinelli, 26, hopes to go on this summer to meet the winner of a proposed March fight between WBA and WBC title-holder O'Neil Bell and Jean-Marc Mormeck.