Question: What football team does the man who Uygar Mert Zeybek replaced in the Süper Lig on 31 May 2015 play for?

Context paragraphs:
2014–15 Mersin İdmanyurdu season: Mersin İdmanyurdu (also "Mersin İdman Yurdu", "Mersin İY", or "MİY") Sports Club; located in Mersin, east Mediterranean coast of Turkey in 2014–15.  Mersin İdmanyurdu football team in 2014–15 season in Turkish Süper Lig.  2014–15 season was the 14th season of Mersin İdmanyurdu football team in Süper Lig, the top level division in Turkey.  Mersin İdmanyurdu football team has finished 2014–15 season in 7th place in Turkish Süper Lig and remained in the league.  Team participated in 2014–15 Turkish Cup and was eliminated at quarterfinals.

2015–16 Süper Lig: The 2015–16 Süper Lig (known as the "Spor Toto Süper Lig" for sponsorship reasons) is the 58th season of the Süper Lig, the highest tier football league of Turkey.

Ozan Tufan: Ozan Tufan (born 23 March 1995) is a Turkish professional footballer who plays as a midfielder for Süper Lig club Fenerbahçe in Süper Lig and Turkey national team.  His primary position is holding midfielder but he can also play as both right back and also right winger.  He made his Süper Lig debut on 19 May 2013 against Gençlerbirliği.  On 12 August 2015, Fenerbahçe acquired Ozan for €7 million.

Mersin İdmanyurdu: Mersin İdmanyurdu (also "Mersin İdman Yurdu", "Mersin İY" or "MİY") is a Turkish sports club from Mersin, Turkey in the eastern Mediterranean Region.  The football team has played in the Süper Lig, Turkey's first level division, since the 2011–12 season.  The team played in the Turkish first division for 11 seasons, and after the 1983–84 season the football team played in the Turkish second and third divisions.  The team was promoted to the Turkish second level division after the 2008–09 season.  MİY became the champions of the Turkish second division during the 2010–11 season and earned promotion to the Turkish Süper Lig during the 2011–12 season.  Previous ground of the team was 10,125 capacity Tevfik Sırrı Gür Stadium.  In 2013, their new 25,534 person capacity stadium, New Mersin Stadium, was inaugurated on 23 March 2013 with a TFF First League match against Gaziantep Büyükşehir Belediyespor.  Their main rivals are Adana Demirspor, Adanaspor and Tarsus İdmanyurdu, and are friendly with Bucaspor.

2015–16 Mersin İdmanyurdu season: Mersin İdmanyurdu (also "Mersin İdman Yurdu", "Mersin İY", or "MİY") Sports Club; located in Mersin, east Mediterranean coast of Turkey in 2015–16.  Mersin İdmanyurdu football team has participated in 2015–16 season in Turkish Süper Lig.  2015–16 season was the 15th season of Mersin İdmanyurdu football team in Süper Lig, the top level division in Turkey.  Team participated in 2015–16 Turkish Cup at third round.

2011–12 Mersin İdmanyurdu season: Mersin İdmanyurdu (also "Mersin İdman Yurdu", "Mersin İY", or "MİY") Sports Club; located in Mersin, east Mediterranean coast of Turkey in 2011-2012.  2011–12 season was the 12th season of Mersin İdmanyurdu football team in Süper Lig, the top level division in Turkey.  Mersin İdmanyurdu football team has finished 2010–11 season at 1st place in TFF First League.  The team has promoted to 2011–12 Süper Lig.  The aim of team was remaining in the league for the first year after promotion.  MİY finished season at 13th place and remained in the league.  Team participated in 2011–12 Turkish Cup and was eliminated at Round 3.

2012–13 Süper Lig: The 2012–13 Süper Lig (known as the "Spor Toto Süper Lig" for sponsorship reasons) was the 55th season of the Süper Lig, the highest football league of Turkey.  Galatasaray are the defending champions.  The season began on 17 August 2012 and ended on 19 May 2013.

Emre Belözoğlu: Emre Belözoğlu (, born 7 September 1980 in Istanbul) is a Turkish football midfielder who plays for İstanbul Başakşehir.  A talented playmaker, his past clubs include Galatasaray, Inter Milan, Newcastle United, Atlético Madrid and Fenerbahçe.

2011–12 Süper Lig: The 2011–12 Süper Lig (known as the "Spor Toto Süper Lig" for sponsorship reasons) was the 54th season of the Süper Lig, the top level football league of Turkey.  Fenerbahçe were the defending champions.  The start date of the league was due to be 7 August 2011, but due to the match fixing scandal in Turkey it began instead on 9 September 2011 and was concluded on 12 May 2012.  Galatasaray won their 18th title.  A new format was introduced this season, in which after the regular season two play-off groups were played to decide over the Champions League and Europa League starting rounds.  Points of the regular season were halved for ranking in those.

Uygar Mert Zeybek: Zeybek is a youth exponent from Fenerbahçe.  He made his Süper Lig debut at 31 May 2015 against Kasımpaşa.  He replaced Emre Belözoğlu in extra time in a 2-0 home win.

Supporting paragraphs: Uygar Mert Zeybek Emre Belözoğlu
Answer: İstanbul Başakşehir