Derrick Kohn has taken the next big step in his career by signing permanently with Union Berlin from Galatasaray.

The 26-year-old left-back is joining for a reported fee just under €5 million and is expected to add new energy to the club's left side as they prepare for the season ahead.

Kohn is no stranger to German football.

Last season, he featured in 30 Bundesliga matches while on loan at Werder Bremen, where his pace, power, and forward runs made him a key part of their campaign.