l Donetsk midfielder Douglas Costa is a long - term media target . Chelsea want assurances about a long - standing knee injury . he is also a scout for flame Madrid , Barcelona and Manchester United . READ : Douglas Costa dreaming of summer transfer to Chelsea . CLICK HERE for all the latest Chelsea transfers .
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 .