Chelsea have agreed a deal to sign Borussia Dortmund midfielder Christian Pulisic.

The United States international will remain at the German club on loan for the remainder of the season before completing his move to Stamford Bridge in the summer.

Chelsea will pay £57.7million for Pulisic, who has scored three goals in all competitions so far this campaign.

His contract with Dortmund was due to expire in 18 months and the 20-year-old has always had ambitions of playing in England.

Pulisic, who joined Dortmund as a youth player in 2015 and has made over 100 appearances for the club, could arrive at Stamford Bridge as a title winner with Dortmund currently leading the Bundesliga by six points.

Pulisic will become Chelsea’s third most-expensive signing in their history after the £71million deal for goalkeeper Kepa Arrizabalaga and £60million they spent on striker Alvaro Morata.

“It’s a privilege to have signed for such a legendary club and I look forward to working hard towards being a contributor to their team of world class players,” said Pulisic.

Pulisic’s arrival could spark fresh fears over the future of star man Eden Hazard as he continues to mull over his long-term future at Chelsea amid interest from La Liga heavyweights Real Madrid.