Borussia Dortmund's Christian Pulisic has joined Chelsea in a £58 million deal.

The American winger has been immediately loaned back to Dortmund until the end of the season.

With Pulisic unable to agree terms on a extension for his current contract, which was set to expire in 2020, Dortmund decided it was best to cash in on the 20-year-old.

"It was always Christian's dream to play in the Premier League. That certainly has to do with his American background, and as a result we were unable to extend his contract," BVB sporting director Michael Zorc told the club's official website.

"Against this background, we have decided to accept an extremely lucrative bid by Chelsea, given the low contract maturity."

PSG and Liverpool were two other clubs who registered an interest in Pulisic, who has struggled for game-time under Lucien Favre this season.