Juan Bernat. Tasci was soon relegated to the substitutes bench for the rest of the season, as the club went on to win the league. At the end of the 2015–16 season, during which he made three appearances, Tasci said that he regretted joining the club, citing lack of playing time. The club decided not to take up an option to sign Tasci on a permanent basis. İstanbul Başakşehir On 5 January 2019, having spent six-months as a free agent, he finally moved to Turkey to join title contender İstanbul Başakşehir. Upon joining the club, Tasci said it was a dream for him to play in Turkey. Tasci made his debut, playing the full 90 minutes in a 1–0 win over Hatayspor in the first leg round of 16 of the Turkish Cup. It wasn't until 18 February 2019 that he made his league debut for Başakşehir, playing the entire match in a 1–0 win over Antalyaspor, for which he earned the praise of the Turkish media. However, during a 2–1 win over Fenerbahçe on 9 March 2019, Tasci was substituted after a tackle from Joseph Attamah. International career Because of his Turkish descent and German birth, he was eligible to play internationally for either Germany or Turkey, but in October 2006 he decided to play for Germany despite interest from Turkey. Tasci explained his decision by saying, "It was a decision for Germany and not against Turkey, but in the end, it's German coach Joachim Löw, who made the most effort for me to come." Youth career On 12 September 2005, Tasci made his Germany U19 debut in a 1–1 draw against China U19. He went on to make two more appearances for the U19 side. On 30 August 2006, Tasci played his only match for the Germany U20 team, when he started in a 1–0 win against Switzerland before being substituted. Two months later, Tasci was called up by the Germany under-21 team for the first time, but did not play. Tasci made his debut for the Germany under-21 team on 6 February 2007 in a 2–0 win against Scotland, in what turns out to have been his only appearance for the U21 side. Senior career In August 2007, Tasci was called up to the Germany's senior team for the first time but did not play. He went on to make his senior international debut for Germany on