IBF, WBA and WBO heavyweight champion Wladimir Klitschko has told British fighter David Haye that he should take anything his brother Vitali offers him to come out of retirement.
Haye retired from boxing after losing his WBA belt to Wladimir but a return against Vitali, who holds the WBC heavyweight title, has since been touted.
Wladimir has told Haye to "grab the chance to gain respect back" by taking whatever is offered financially.
"If I was him, knowing the situation he's in right now, I'd fight Vitali for whatever the Klitschkos were offering," said Wladimir.
"I'd just grab the chance to gain respect back. We're not asking him to fight for free; We're giving him a chance to earn some good money, but more importantly, to become a world champion again."
Lennox Lewis recently urged Haye to come out of retirement but not to take on the Klitschkos.
