Shakhtar Donetsk's midfielder Douglas Costa is ready to leave Ukraine to make a move to Premier League champions Chelsea.
The 24-year-old is a target for boss Jose Mourinho according to reports in England and he would be delighted to join the Blues during the summer transfer window.
"Eventually the time comes when you get tired of playing always in the same league," Costa told Bild.
"I'm 24 years old and it is worth trying to tell people that I want to go.
"We have a wonderful coach in Mircea Lucescu, but I think it's time for a chance and I think Mourinho is the best in the world."