 In the 2008–09 season, Tasci was paired with Khalid Boulahrouz in the centre-back position at the start of the season.In the qualification round of the UEFA Cup against Hungarian side Győri ETO, he scored his first European goal in a 2–1 victory, taking his club to the next round.In December 2008, his manager and mentor Armin Veh was sacked following the club's run of defeats.