[1] Born in Novi Pazar, Đerlek started playing football with a local academy named "AS" at the age of 7.
[5] He sued the club for unpaid wages and received a dispute over arbitration in March 2017,[6] when he left OFK Beograd as a free agent.
[9] On 28 April 2017, Đerlek signed a three-year contract with Partizan, when he was officially promoted by the club's director of football, Ivica Iliev.
[11] In February 2018, Đerlek joined the first squad under coach Miroslav Đukić, among a group of youth players who impressed during the winter-break,[12] choosing to wear the number 44 jersey.
[13] He made his professional debut for Partizan in 23rd fixture match of the 2017–18 Serbian SuperLiga campaign, having played 67 minutes in 2–1 away victory over Mladost Lučani on 18 February 2018.
[15] Đerlek won his first trophy with Partizan after 2–1 victory over Mladost Lučani in final match of the 2017–18 Serbian Cup on 23 May 2018.
He is characterised as a creative playmaker with strong pace, likewise good ball control and game vision.