Arsenal have confirmed the signing of attacking midfielder Thomas Eisfeld from Borussia Dortmund on a long-term contract.
The 19-year-old came through the German outfit's academy and leaves after seven years with the club.
Eisfeld has impressed for Dortmund's Under-19 side this season and has now completed a move to the north Londoners.
"I feel very proud to have signed for Arsenal," Eisfield told the club's official website, www.arsenal.com.
"This is a great club, with many great players, and I'm so happy to be joining Arsenal.
"It's a real honour to be team-mates with the great players at Arsenal, and also training every day with players like Tomas Rosicky - who I grew up watching play at Dortmund.
"I will give it everything I have here and do my best to make the manager, players and fans happy.
"I would also like to thank Borussia Dortmund, where I played for the last seven years, for everything they have done for me.
"I had a great time there, and there were many wonderful coaches who helped me get to where I am today."
Eisfeld has featured at youth level for the German national team and can play in a variety of positions.