I always maintained that Chelsea's Wembley plans were obviously a blocking effort designed to fuck us over. Absolutely no way that any reasonably managed stadium construction would require the 3 or 4 seasons at Wembley that Chelsea was asking for.
Chelsea's collapse this season has been so fucking massive for us on the stadium front. At the start of the season absolutely all of the authorities were adamant that we couldn't share Wembley. Look at them now. "Errr, did we say Spurs couldn't share Wembley? Well... umm maybe you can after all."
Chelsea's negotiations to play at Wembley helped rather than hindered us - the FA showed no interest in engaging with Spurs until they had got close to agreeing a deal with them.
Because they can't openly be seen to favour one team over another they had to talk to Levy.
Also, because of where Stamford Bridge is located it will take fucking ages to demolish and rebuild - loads of wealthy stakeholders that will make the process a nightmare.