Roy Jones Jr and Bernard Hopkins will finally have their rematch early in 2010, 17 years after their initial bout.
Jones claimed a unanimous decision over his rival in May 1993 - and talk of a rematch has raged ever since.
Jones will be 41 when the pair meet and has won his last two fights after losing to Joe Calzaghe.
Hopkins, four years his senior, beat Kelly Pavlik in his last fight.
Jones is scheduled to meet Danny Green of Australia in December while Hopkins is also expected to take another fight before facing Jones.
Golden Boy CEO Richard Schaefer is relishing the prospect of the two legends meeting, telling espn.com: "Sixteen years ago they fought each other and went on and made history in their own way.
"Each one is considered today as ring royalty. That's why I think when those two guys are going to fight it will be to determine who will be king of the ring. We went back and forth for so long, but we finally pulled it off.
"They both signed and they will fight. It will be a truly historic showdown. A lot of people didn't believe it would ever happen. But guess what? It's going to happen."