Frank Bruno's World Council heavyweight title challenge against Oliver McCall has been rescheduled for 2 September after the champion pulled out of the original 22 July date last week with a cut left hand.
Wembley Stadium was the original venue and could still be the site for a show that promoter Frank Warren describes as "Britain's biggest". However, there are "numerous" other venues - some of them outside London - being considered by Warren, who may also stage the Steve Collins versus Chris Eubank World Organisation super-middleweight title rematch on the same bill.
There is also a chance that "Prince" Naseem Hamed, the leading contender for the WBO super-bantamweight title, may challenge the holder, the unbeaten Mexican, Marco Antonio Barreras, on the same bill.
Nigel Benn's WBC super-middleweight title defence against Italy's Vincenzo Nardiello, scheduled for the McCall card, will still go ahead on 22 July, but at the London Arena.
That bill will also feature the WBO bantamweight champion, Alfred Kotey, in a defence against an opponent yet to be named.