Celtic midfielder Mika Baur admits he could never have imagined that his first Germany call-up would come so soon after his move to Glasgow. The 22-year-old could make his international debut in Thursday's Nations League encounter with Serbia in Munich after being included in Jurgen Klopp's squad. Baur moved from Paderborn in August after helping his club win promotion to the Bundesliga and still cannot believe how quickly international recognition followed.