Holyfield urges foes Joshua and Wilder to cash in on mega-fight
Former heavyweight world champion Evander Holyfield has called on Deontay Wilder and Anthony Joshua to fight "while the money's there".
Wilder again called out Joshua after defending his WBC world heavyweight title against Luis Ortiz on Saturday.
WBA and IBF champion Joshua faces WBO title holder Joseph Parker on March 31, but Holyfield warns it will be close.
"I don't know if Joshua is going to beat Parker," he said. "Parker's a great fighter with a good mindset."
Holyfield (55) was ringside as Wilder made the seventh defence of his WBC title in New York, the American stopping Ortiz in the 10th round.
Britain's Joshua (28) will meet 26-year-old New Zealander Parker at Cardiff's Principality Stadium and the winner will hold three of the four recognised heavyweight titles.
Wilder (32) holds the other, prompting anticipation he could face the winner to produce the first heavyweight to hold all four.
"All three of them have got the mindset and all three are youngish too," Holyfield said.
"If Joshua wins (against Parker), I think he and Wilder can both make about $250m (£180m) so why not while the money's there?
"In being a great fighter you make money because you have proven you are the best."
Holyfield was an undisputed champion at cruiserweight before going on to rule at heavyweight. He expects Wilder to grow in confidence.
"Your confidence gets even bigger," Holyfield added. "When I beat George Foreman, I didn't think a person with two hands could beat me."