The 83kg catchweight for the Mundine-Green re-match is 7kg lighter than the cruiserweight limit Green most recently fought at.
Mundine stole the show at Tuesday's press conference, refusing to back away from his declaration that he will stage a protest during the Australian national anthem when it is played at Adelaide Oval.
"You know my stance on certain things. I don't need to reiterate it," he said.
The former rugby league star predicted he will finish Green inside 12 rounds.
"This time I'm not going to leave it until the end," he said.
"He's going to get stopped.
"I just want to put this s*** to rest - that I'm the better man. Skills pay the bills. I'm going to be as sharp as I was in 2006.
"It's been a great rivalry for a long time. Obviously, me and Danny don't see eye to eye. He's always come up with excuses. After the first fight, just excuses. There was weight drain. There was this. There was that. Now I'm coming up 13kg. I won't even make 83kg.
He can be 90kg or 100kg, when we get in the ring, speed beats power. Skills pay the bills.
"I've been fighting with a bad hip - a very bad hip - for the last seven, eight years.
"That's fixed now. I feel my feet are back, my movement's back and you're all going to see that on February 3."
When asked why he is prepared to give Green a weight advantage, Mundine said: "Because it's easy work, it's easy money".
"You know what weight we're fighting at? We're fighting at Danny Weight.
"But, you know what, it don't matter. I'm going to school him again."
Green did not appear shaken by Mundine's bravado.
"You hit me with everything you had with two hips," Green said of their 2006 fight.
"I didn't stop marching forward," Green said.
Mundine attended Green's fight against Kane Watts in Melbourne in August, escalating their negotiations for a re-match.
After defeating Watts, Green immediately set his sights on Mundine and said at the time he was extremely confident of winning any future re-match.
"We'll sit down and get it going," Green said of the ongoing negotiations at the time.
"First we'll get a state, then we'll get a venue and start talking details.
"Mundine won't hurt me. It'll be more of a boxing contest. It's a whole different ball game. My sparring partners will be different, I'll be a lot sharper, too, because he's sharper.
"That'll bring my sharpness out, because when I'm sparring sharper guys, I'm sharper too.
"When I'm sparring slower, cumbersome guys like Kane Watts, you can't really get into a rhythm, it's hard to let fast shots go."
South Australian Sports Minister Leon Bignell told 5AA Radio the fight will draw a huge interstate audience.
"The first rule of fight club is we don't talk about fight club, but no one told the (Adelaide Advertiser) because they've leaked it," Bignell said.
"They've put it on the front page and I can confirm that Anthony Mundine and Danny Green will be in Adelaide today. We'll hold a press conference where we'll confirm that they'll take part in a grudge match.
"The only time they fought was in 2006. They hate each other, these two blokes. It's genuine. It's not confected it all. We're going to have the biggest fight in Australia's history - 37,000 people at the Adelaide Oval on a balmy summer night. It will be a terrific spectacle that will be televised around the world and attract about 10,000 fans into Adelaide.
He said the government is anticipating up to 10,000 boxing fans will travel to Adelaide for the fight.
Neither Mundine or Green calls South Australia home.
"We're talking about $4.5 million into the economy through the fight, we're talking about a massive national and international TV audience for one of the great fights between two of the best fighters of our generation," he said.
"These guys are supreme athletes. Last night I went on YouTube and watched their fight from 2006. They just hit each other all night. I've never been to a boxing match in my life ... but this thing has got some intrigue about it."
Betting agencies appear uncertain about the likely result because of the breaks between fights for both boxers.
