“It feels amazing and I’m super excited to get started with Chelsea. Obviously, I have a season to finish off with Dortmund but I’m definitely looking forward to be here [with Chelsea]. It’s going to be an amazing experience, one I can’t wait for, and to be here in England, speaking English again and meeting all the guys is something I’m thrilled for.
“I’ve been waiting a long time for this and playing in the Premier League has been one of my biggest dreams. To be a Chelsea player is a huge honour and something I’m really excited for.”
On future teammates
“There are so many great players here already and I can’t wait to work with them all. I’m excited to play alongside N’Golo Kante, I think he’s a fantastic player and I can’t wait to meet him. Also there’s the guys in the backline, players like David Luiz and [Toni] Rudiger, I’m looking forward to working with them and I think it’s going to be really cool.”
“I think coming here will be a smooth transition for me, already knowing the language and things like that,” said the United States international.
“It was more difficult when I first went over to Germany, but I learnt so much as a player and as a person and I feel ready for the next big challenges to come now. I like to think I’m a really good team player, a guy who gives everything and I look to bring my attacking style to the side. I’ll do whatever I can to help the team win games.”
Chelsea lashed out £57.6m in winter to sign the Borussia star.