He is prepared to give the 29-year-old Olympic super-heavyweight champion £500,000 to meet Williams and has offered to make a side bet of £200,000 that Harrison would lose. Warren said:'Harrison claims he has the talent to win the British title tomorrow. But does he have the guts to back up his talk? If he is as good as he says he is, then there is £700,000 on the table for him - if he wins.