İrfan Buz

Buz began playing amateur football with Rot-Weiß Lüdenscheid, before playing professional in Turkey. Buz joined Sarıyer S.K. in the Süper Lig in 1989, but only made one appearance over two years.

After his footballing career, Buz began working as a football manager. He transitioned as player-manager for the amateur German club Barışspor Hackenberg. From 1999 to 2008, he served a youth coach for the German Football Association. He managed the German club SpVg Olpe from 2009 to 2013 and got attention from the Turkish Süper Lig. In 2013, he briefly joined FC Iserlohn 46/49 before moving to Bursaspor. Buz was appointed manager of Bursaspor on 26 March 2014. He then went to manage Gençlerbirliği. He then spent a couple years at Yeni Malatyaspor, who he helped promoted to the Süper Lig in the 2016–17 season. In September 2017, he became the manager of Osmanlıspor, who were relegated at the end of the season.

Buz moved to Germany in 1971 with his family, and graduated as a construction technician from the Technical University of Dortmund.