hat-trick in the Champions League, after Messi, Ronaldinho, Rivaldo, Samuel Eto'o and Neymar. This also marked Turan's first hat-trick in European competitions. İstanbul Başakşehir (loan) After not playing a single game for Barcelona in the 2017–18 season, Arda was loaned out to Turkish club İstanbul Başakşehir for the remainder of the season and two more, in the winter transfer window. He made his debut for the club in a league match on 21 January 2018, coming off the bench in the 65th minute mark and scoring the third goal in the 3–0 away win over Bursaspor. On 4 May 2018, Turan was sent off in a league match against Sivasspor for pushing an assistant referee after disagreeing with a ruling. He received a 16-match ban from the Turkish Federation's disciplinary board, the longest punishment ever issued to a player in the country. Later, however, the ban was reduced to 10 games by TFF's arbitration board. On 7 January 2020, Turan's loan was terminated six months early by Başakşehir. Return to Galatasaray On 5 August 2020, Galatasaray announced the signing of Turan on a two-year deal. Due to a long-term injury to goalkeeper Fernando Muslera, he was made the club's captain. He played his first official match of the 2020–21 season against Gaziantep in the Super League on 12 September. The next season, he played only seven matches and didn’t manage to score any goals. Retirement On 12 September 2022, Turan has shared via his social media account that he "hung up" his football boots. His retirement announcement also came along with a formal retirement video, put together by the Libre Channel. International career Turan was a Turkish international regular, having made over 90 appearances for Turkey at senior level. He made his debut in the 1–0 friendly victory over Luxembourg on 16 August 2006, having worked his way through the youth national team at the under-19 and under-21 levels. He scored his first international goal on 25 May 2008 in a friendly against Uruguay. Turan featured in nine of Turkey's 12 qualification matches for Euro 2008, and starred in the finals of the tournament itself. Turan scored two goals during Turkey's progression to the semi-finals. The first was a last-minute winner against co-hosts Switzerland in their second group stage match to eliminate them from the competition. His second came in the final group stage match against the Czech Republic, in