chelsea are being kept updated on douglas costa's fitness ahead of a £20million summer swoop the brazil international is a long term target of jose mourinho, who is keen to bring the shakhtar donestsk midfielder to stamford bridge and the blues will revive their interest in the 24 year old ahead of next season provided they receive assurances over a long standing knee concern brazil international midfielder douglas costa is a long term target of chelsea and jose mourinho  mourinho and chelsea are receiving fitness updates about costa as they want assurances about a knee injury  costa (left) has also reportedly caught the attention of real madrid, barcelona, arsenal and liverpool  chelsea are being regularly updated on costa's fitness and will press ahead with a move if they are satisfied with the joint in question costa will spark a transfer scramble this summer with shakhtar donetsk ready to sell their prized asset shakhtar chiefs are now open to selling costa and talks with third parties over his departure are underway the ukrainian side hope to spark a bidding war for the midfielder in attempt to maximise his transfer fee, with a starting price of £25million costa is open to joining a barclays premier league club, but wants to be playing champions league football however, a host of europe's top sides will also be in the running to land costa this summer, real madrid and barcelona among them costa (left) plays for brazil but has dual portuguese nationality, lowering fears of work permit issues  costa is said to be open to moving to the premier league but wants to join a club in the champions league  costa could make the switch from shakhtar donetsk to stamford bridge for £20million  arsenal have had costa watched extensively, while manchester united and liverpool have both been linked with a move but chelsea are set to lead the charge having tracked the brazil international for two years despite playing for brazil, costa has dual portuguese nationality so should not face work permit issues
shakhtar douglas costa chelsea costa real madrid barcelona manchester united
shakhtar donetsk midfielder douglas costa is a long term chelsea target . chelsea want assurances about a long standing knee concern . costa is also a target for real madrid, barcelona and manchester united . read: douglas costa dreaming of summer move to chelsea . click here for all the latest chelsea news 