The talented pair boast 61 knockouts between them in 69 professional bouts and will collide for all four titles in a contest that is certain to be one of the most exciting fights of the year.
Golovkin, 32, had been hoping Floyd Mayweather would choose to meet him at 154lbs, but as the American staying at welterweight, ‘GGG’ was forced to look elsewhere – agreeing to fight the Canadian who had called him out earlier this year.
Lemieux defeated Hassan N’Dam to claim the red belt just last month and couldn’t have picked a harder fight for himself as Golovkin in universally recognised at the best 160lber in the world and in the pound for pound top five in most lists.
The winner of the mouth-watering encounter will then await the victor of the Miguel Cotto v Canelo Alvarez full WBC title clash in November for a mandated bout in the first half of 2016.
Undercard fights for the card are still being discussed by all parties, although the headliner sells itself as both main eventers have a KO percentage of over 85 percent.