Tyson Fury insists he will be motivated by pride rather than prize money when the controversial British fighter faces Deontay Wilder.
Fury will travel to Las Vegas in November to meet WBC heavyweight champion Wilder in what will be the third fight of his comeback.
The 30-year-old eased to victory against Francesco Pianeta at Belfast's Windsor Park on Saturday, setting the stage for the biggest pay-day of his career in the United States.
But Fury says he is fighting for glory rather than the boost to his bank balance.
"I'm not going into this for a pay cheque. I wouldn't lose for £100 million; you can't pay any amount of money for me to go to Vegas to get sparked out," he said.
"If I didn't believe I could win I'd pack up and retire.
"I don't box to be second best or to make the numbers up, I box to be the best I can be.
"If I ain't good enough so be it; I'm taking this fight because I know I can win. I know multi-millionaires and billionaires too -- money doesn't drive me.
"I'll go to Vegas for free and fight Wilder. I'd rather have no money and win than £200 billion and lose."
Wilder has won 39 of his 40 fights inside the distance and Fury is leaving nothing to chance ahead of his "hardest fight"
He will have a short break before beginning his preparations for the American, with the aim of shedding a further six pounds by Vegas.
"I promised the wife and kids we're going to go on a gypsy holiday, so I'll get the trailer washed down tomorrow, put it on the road and away we go," he joked.