Stefan Gudelj

Gudelj was born in Trebinje, Bosnia and Herzegovina, and began his football career at hometown club FK Leotar. Scouts from Red Star Belgrade identified him at the age of 12, and he subsequently joined the Red Star academy, with a brief spell at FK Čukarički before returning. Originally deployed as a midfielder, Gudelj was later repositioned as a centre-back, where he developed into one of the most promising young defenders in the Red Star academy. He captained the club's youth team and featured for Red Star's under-19 side in the UEFA Youth League. In May 2025, Gudelj signed his first professional contract with Red Star Belgrade, tying him to the club until June 2029. He was subsequently loaned to FK Grafičar Beograd, Red Star's development club competing in the Serbian First League, for the 2025–26 season, where he made 22 league appearances. His performances on loan earned him a call-up to the first team for the winter preparations in January 2026, under new head coach Dejan Stanković, and he subsequently earned a place in the senior squad.

Gudelj previously represented Bosnia and Herzegovina at youth level, but ceased accepting call-ups after 2021. In March 2025, he received his first call-up to the Serbia under-19 side. He was subsequently called up to the Serbia under-21 team in March 2026 for a friendly against Kyrgyzstan. On 4 October 2026, Gudelj made his debut for the Serbia national team in a 2026–27 UEFA Nations League A game against Netherlands.

Club

As of match played 15 October 2026

International

As of match played 4 October 2026