London Mayor Boris Johnson refused to be drawn on whether West Ham United had moved a step closer to moving into the Olympic Stadium.
Reports suggest the Irons have agreed a compromise following demands from Johnson - who is also chairman of the London Legacy Development Corporation - over a share in profits were the Premier League club to be sold in the future.
Speaking to ITV, Johnson said: "I can't go into the details because negotiation is going on, but I am very confident that there will be a good outcome whatever happens, that we will have a fantastic future for the stadium - as I constantly say - with or without Association Football."