ATLETICO MADRID have despatched a delegation to London today in a bid to end the impasse over Diego Costa. The club officials will meet Chelsea director Marina Granovskaia hoping to finalise the transfer of the Spain striker. Atletico, who cannot sign players until January because of a FIFA transfer embargo, are willing to raise their offer to 35m Euros (around £32m) to seal the deal. Costa has already agreed a salary of 10m Euros (£9.1m) a year with the La Liga club, for whom he played from 2010 to 2014. And sources close to the player, who has been AWOL in Brazil since being told he is not wanted at Stamford Bridge, say he hopes it will all be agreed within days. With Costa in exile, Antonio Conte failed to find a replacement during the transfer window and the manager admits he does not yet know if his squad is stronger than the one that ended last season as champions.