[1] Gonlum served a one-year ban stemming from a positive doping test during the 2009 Turkish League final series.

Gonlum served a one-year ban stemming from a positive doping test during the 2009 Turkish League final series.

[2] In June 2014, he signed a two-year deal with Galatasaray Liv Hospital.

[4] In July 2016, Gönlüm signed with Sakarya BB of the Turkish Basketball First League.

[6][7] On August 7, 2019, he signed with Sigortam.net İTÜ Basket of the Turkish Basketball League.