The pair had been linked to fighting for some time and will finally battle it out for the number one position at 168 pounds at the now famous Barclays Center in Brooklyn, New York.
Here’s what the American-based Swede had to say at the press conference attended by his promoter Floyd Mayweather.
“I think this will be an exciting fight. I’m going to give it my all and he’s going to give it his all,” predicted Jack.
“This is a bigger fight than anything we’ve been a part of. He’s going to turn it up and so will I.
“Now it’s me and DeGale. All the other fights are in the past. We’ve had different results against the same fighters. But none of that matters, it’s time to fight.
“It’s not going to matter what people think on fight night. DeGale is definitely one of the top guys in the division. He’s a road warrior. He comes over here and fights guys in their backyards. He deserves a lot of credit. That’s why this fight is so big. We both want to be great.
“I like being the underdog. If I’m the underdog in this fight, then that’s perfect for me. There won’t be any excuses when I beat him.
“Everything happens for a reason. I’m very blessed to be here in Brooklyn. This is my second home in America. I trained at Gleason’s Gym in 2009 and now I’m headlining at Barclays Center. It’s amazing.”