In the week preceding the British Grand Prix, the eight remaining FOTA teams wrote to the FIA, calling for an urgent compromise to the situation and requesting an extension to the deadline in order to negotiate a new Concorde Agreement. The letter made it clear that the FOTA teams were willing to commit until 2012 and supply new teams with technical knowledge and advice. The FIA replied within two hours, indicating that it was willing to deal with FOTA, but stated that the June 19 deadline would stand owing to obligations to the potential new teams and the inability to agree on a new Concorde Agreement in such a short period of time. Mosley's proposal would see the introduction of a budget cap, engine and gearbox rules remaining fixed and the allowance of tyre warmers which were previously expected to be banned for 2010. In addition, Mosley stated a willingness to review the FIA's International Court of Appeal and abandon a controversial appendix to the 2010 rules that would give the FIA the unconditional authority to set rules.