Howard Eastman has been confirmed as John Duddy's opponent at the King's Hall in Belfast on 8 December.
Eastman and Duddy meet ahead of their Belfast fight in December
Eastman, a London-based Guyana native, is a former European, Commonwealth and British middleweight champion.
The 36-year-old "Battersea Bomber" lost his British title to Wayne Elcock last month but boasts a impressive record of 35 knock-outs in his 42 wins.
Eastman should provide the toughest test yet for Derry fighter Duddy, who is unbeaten in 22 contests.
"It's going to be amazing - it doesn't get much better than fighting a guy with Eastman's reputation at the King's Hall," said Duddy.
"He's had almost twice as many knock-outs as I've had fights so that tells you everything about him.
A win against Duddy and I am back on the road to another world title chance
"He has an amazing record and there's no doubt he's a very dangerous man."
For his part, Eastman is confident of beating Irish boxing's "golden boy".
"A win against Duddy and I am back on the road to another world title chance and that's what this game is all about," said the 36-year-old.
Eastman suffered points defeats in both his world title fights, against William Joppy in 2001 and four years later against Bernard Hopkins.
This will be Duddy's first appearance in Northern Ireland, which has been given the go-ahead as his proposed world title fight, scheduled for 26 January, has been put back.
Duddy, instead, plans to challenge WBC middleweight champion Kelly Pavlik in June at Madison Square Garden.
The King's Hall undercard features Lurgan's Stephen Haughian taking on holder Giammario Grassellini for the IBF Intercontinental welterweight title.
Paul McCloskey's opponent for the IBF Intercontinental light welterweight title fight has still to be confirmed.