Chelsea fullback Ian Maatsen has signed with Borussia Dortmund.

Maatsen has joined Dortmund on-loan to the end of the season. The Dutchman has also signed a new deal to 2026.

He said: "Borussia Dortmund tried hard to find me," Maatsen told Dortmund's official website.

"I've been following BVB and its fans for a long time and was even at the Champions League game in Manchester in autumn 2022 to see the team live on the pitch.

"I'm very happy that it's now the loan worked out. I promise that I will give everything for the team's success and I'm really looking forward to the Yellow Wall."