Chris Eubank Jr says he will be "finished" in boxing if he loses to Conor Benn in their catchweight fight on 8 October.
Benn is coming up two weight classes to fight Eubank Jr and the pair argued throughout a lengthy media conference in London.
Eubank Jr suggested the weight cut to 157lbs would leave him at "60%" for the fight.
"If I lose to Conor Benn I am finished," he said.
Addressing his rival, he added: "Ill be 60% on the night and thatll be enough to do whatever I want with you."
Nigel Benn and Chris Eubank Sr were not present at the media event, but the memory of their own rivalry was ever present.
Eubank Jr gave a passionate speech about his decision to accept the fight and undergo what will be a big weight cut given he usually operates at middleweight.
"I dont hate anybody I would ever give anyone that type of power over me. I dont even dislike Conor," he said. "But at the same time this fight is personal. The things his father put my father through, I cant forget and I cant forgive.
"I watched the mental toll and the injuries. Him going to hospital and losing half his tongue. I watched Nigel tell my father on national TV that he hated him.
"These are things I cant forgive. This is a fight where our family names are on the line and we have to uphold them. Thats where it makes it personal."
Benn responded: "Its not that deep."
More to follow...