Chelsea have agreed a deal to sign Christian Pulisic.
The 20-year-old, who moved to Germany as a teenager and has made more than 80 appearances for Dortmund.
“It was always Christian’s dream to play in the Premier League,” said BVB sporting director Michael Zorc. “That certainly has to do with his American background, and as a result we were unable to extend his contract. Against this background, we have decided to accept an extremely lucrative bid by Chelsea, given the low contract maturity.