FC St. Pauli

The 20-year-old joined the club's youth setup from VfB Lübeck in 2016. He worked his way up to the senior squad via the Under-23s and made his second division debut in the 4-2 win over Heidenheim early this season. The US citizen has since made nine competitive appearances in total, scoring one goal. He has also played three times for the Under-23s this season (one goal).

Reaction to the move

Director of sport Andreas Bornemann: "Leon approached us with the request to terminate his contract having already asked for a move to the Philadelphia Union last summer. We would have liked to him to stay with us, but he made it clear that he really wanted to take this step. I wish Leon every success in his future career."

Head coach Timo Schultz: "It's a shame Leon is leaving us. I've known him for five years and he was my captain at youth level. He's an incredibly ambitious and hardworking player with a clear objective, so I can understand why he's so eager to take the chance to join the Philadelphia Union. I wish him all the best!"

Leon Flach: "I'll never forget my fantastic time at St. Pauli and wish to thank everyone who was a part of my journey. But now I really want to take up the challenge at the Philadelphia Union, it's a great opportunity for me. I wish this great team and unique club nothing but the best for the future."

Photos: Witters