Christian Pulisic has spoken for the first time since sealing a £58m move to Chelsea this summer.
The 20-year-old has joined Chelsea but will be loaned back to the German club for the remainder of the season, the Bundesliga club have announced.
Chelsea have moved quickly to secure Pulisic with his Dortmund contract due to expire in 18 months.
In a lengthy statement Pulisic has thanked Dortmund and their fans whilst also speaking of his delight at joining such a "legendary" club.
"In the summer of 2019 I move on to Chelsea and to a new competition, the English Premier League," he said. "It's a privilege to have signed for such a legendary club and I look forward to working hard towards to being a contributor to their team of world class players.
"I'm looking forward to working with Maurizio Sarri and his technical team."
With Pulisic set to run out the remainder of his deal Dortmund felt they had no choice but to cash in on one of their prized assets.
"It was always Christian's dream to play in the Premier League," sporting director Michael Zorc told the club's official website.
"That certainly has to do with his American background and as a result we were unable to extend his contract. Because of this, we have decided to accept an extremely lucrative bid by Chelsea, given the low contract security."
Pulisic, 20, joined Dortmund as a youth player in 2015 and has made over 100 appearances for the club.
