Anthony Joshua says he is “unlikely” to fight on 9 July now fellow British world heavyweight champion Tyson Fury defends his titles on that day.
WBA and WBO champion Fury is scheduled to take on Wladimir Klitschko in a rematch in Manchester.
“It was always in my mind to fight on 9 July, but there are other dates as well,” IBF champion Joshua, 26, told BBC Radio 5 live.
“Let Fury and Klitschko have their day. Let’s not mix anything up.”