Question: Zeybek is a youth exponent from Fenerbahçe, he made his Süper Lig debut at 31 May 2015 against Kasımpaşa, he replaced who, which is a Turkish football midfielder who plays for İstanbul Başakşehir?

Context paragraphs:
2016–17 İstanbul Başakşehir F.K. season: The 2016–17 season was İstanbul Başakşehir's eighth consecutive season in the Süper Lig and their 27th year in existence.  This season, İstanbul Başakşehir participated in the Süper Lig, Turkish Cup and UEFA Europa League.  The season covers the period from 28 July 2016 to 4 June 2017.

Mustafa Denizli: Mustafa Denizli (born 10 November 1949) is a former Turkish football player and current the manager of Eskişehirspor.  He has managed many Turkish notable football clubs, including ""Istanbul Big Three"" (Fenerbahçe, Galatasaray and Beşiktaş) and has won the Süper Lig title three times.  He is the only manager in history to win the Süper Lig with three different clubs.  He also has worked outside of Turkey with Alemannia Aachen in Germany, Pas and Persepolis in Iran and Khazar Lankaran in Azerbaijan.  He managed the Turkish national team for four years and reached the quarter-finals of Euro 2000.  On 23 December 2011, he returned to his former club, Persepolis but resigned at the end of the season.  He spent 17 years with his hometown club Altay in İzmir, gaining a reputation as one of the best players in the position of attacking left forward in the league's history.

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.

Kasımpaşa S.K.: Kasımpaşa Spor Kulübü (] , Kasımpaşa Sports Club), also known as Kasımpaşa, is a Turkish football club located in the Beyoğlu district of Istanbul, Turkey.  They play their home games in the Recep Tayyip Erdoğan Stadium in Kasımpaşa, a neighbourhood of the district of Beyoğlu.  The club is one of five Süper Lig franchises representing Istanbul, along with Fenerbahçe, Galatasaray, Beşiktaş and İstanbul Başakşehir.  The 2016–17 season is Kasımpaşa's thirteenth consecutive season in the Süper Lig and their 96th year in existence.

İstanbul Başakşehir F.K.: İstanbul Başakşehir Futbol Kulübü (] ) is a Turkish professional football club based in the Başakşehir district of Istanbul, Turkey.  The club is better known as İstanbul Başakşehir or, due to sponsorship, Medipol Başakşehir (] ).  The club was founded in 1990 as İstanbul Büyükşehir Belediyespor.  They first reached the highest level in Turkish Football in 2007–08.  They play their home games at the Fatih Terim Stadium in Istanbul and are owned by the Ministry of Youth and Sports.

Ersun Yanal: Kazım Ersun Yanal (] , born 17 December 1961) is a Turkish football coach who is in charge of Süper Lig side Trabzonspor.  With Gençlerbirliği Ersun Yanal has impressed many football followers with excellent wins against Blackburn, Parma and Sporting Lisbon in the 2003–04 UEFA Cup going out to eventual winners, Valencia in extra-time after inflicting them with their only defeat in cup.  The impressive run in the UEFA Cup and offensive football increased support for him to be named as head coach of the Turkish national team.  After one and a half year spell with the national side, Ersun Yanal adopted and added a new scientific understanding of the game, His style has always been attacking football doubled up with tactis unprecedented in Turkish Football after keeping newly promoted Manisaspor on top of the Süper Lig for 12 weeks with a 5–3 shock defeat of league title favorties Fenerbahçe One quality overlooked on Ersun Yanal is his years of devotion to Turkish Football.  It was 20 years ago when he took charge of amateur outfit Denizli Belediyespor to move through ranks and hold a very respectable place amongst Turkish coaches.

Zeki Yıldırım: Zeki Yıldırım (born 15 January 1991) is a Turkish footballer who plays as a midfielder for Turkish Süper Lig club Antalyaspor.  He made his Süper Lig debut against İstanbul B.B. on 1 September 2012.

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.

Doka Madureira: Francisco Lima da Silva (born 11 February 1984), commonly known as Doka Madureira or Doka, is a Brazilian football midfielder, currently playing for İstanbul Başakşehir in the Turkish Süper Lig.

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.

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