Serbia international Filip Kostic has signed with Hamburg for five seasons. 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. Was sich in den letzten Tagen angedeutet...