WBA light-welterweight champion Amir Khan has accused Timothy Bradley of chickening out of a unification showdown.
Khan had hoped to face the WBC and WBO title holder Bradley in his next bout - but the American rejected the opportunity despite being presented with a favourable offer.
And the 24-year-old Khan, who now faces IBF champion Zab Judah in Las Vegas on July 23, believes Bradley is more concerned with his career.
"Bradley was given the best deal any opponent of mine could be getting," said Khan.
"I offered him 50% of the UK revenue, which is unheard of, but that's how much I wanted the unification fight.
"He turned that down so we turned the page over and took on Zab Judah for a 45-55 split, even though I think Zab was worth 60-40.
"I would have preferred Bradley to take the number one spot and to win his two titles.
"Maybe that fight could happen in the future, but the same deal will not be on the table.
"He chickened out because he knew he was going to get beaten. And if he got beaten by me, his career would be finished. He doesn't draw big crowds, so his two titles are his saviour.
"If I win them off him, he'll be back on the small shows. Even his world title fights are small shows. He's scared of getting beaten."