Hamburg have completed the signing of Stuttgart winger Filip Kostic for an undisclosed fee on a five-year deal.
The 23-year-old was a rare bright spark for the Reds last season as they were relegated from the Bundesliga for the first time in 41 years.
But Kostic, capped nine times by Serbia, will remain in the German top-flight after penning a contract with Bruno Labbadia's men that runs until the end of June 2021, ending his two-year stint with Stuttgart.
- Hamburger SV (@HSV) July 25, 2016
"We are glad that we were able to realise the transfer, he is a player with a high tempo in his actions,'' chairman Dietmar Beiersdorfer told the club's official website.
"Despite being only 23 years old, he has already a lot of experience, knows the Bundesliga and has proven his qualities in the past two years. Filip also continues to hold a high development potential.''