Is there any indication as to how long it may take to approve the planning permission?
The first plan of the project, with a 58,000-capacity stadium, was released in April 2009 for public consultation.[35] In October 2009, the planning application for a 56,000-seat stadium, designed by KSS Design Group, and other buildings was then submitted.[36][37] The proposal, which included the demolition of eight locally listed buildings and two nationally listed buildings, was criticised by conservation groups including English Heritage, as well as the Government's advisory body on architecture, the Commission for Architecture and the Built Environment.[38][39][40] In response to the objections, a revised plan, that retained some of the listed buildings, was resubmitted in May 2010.[41][42] This plan was accepted by Haringey Council on 30 September 2010, and later by the Mayor of London, Boris Johnson, as well as the government.[43][44][45] However, only part of this plan, the construction of Lilywhite House, was implemented
It took Spurs a year, thats an indication, its of course a different site with different issues, but I doubt it will be any quicker than 12months, personally, probably longer.
But we really shouldnt be using Spurs as a benchmark, considering it took them 12 years from idea to Ground opening, but then I suppose its taken us much longer if you factor in Kings Dock and such.