International Sports Office (ISO)
Balkan-to-Elite Bridge
About
International Sports Office is a Belgrade -based football agency founded in 2015. ISO blends elite representation with pathway development, combining hands-on career planning, strong club relationships and full off-field support. The agency rose to wider prominence with the marquee Dušan Vlahović transfer in January 2022 and today manages both top-flight internationals and high-upside prospects, plus selected coaches. — — — — — — — — — —
Key People
Notable Deals
2022 — Dušan Vlahović: Fiorentina → Juventus; permanent; ~€81.6m + bonuses; contract to 2026 - 2025 — Dejan Joveljić: LA Galaxy → Sporting Kansas City; cash trade ($4m); Designated Player deal to 2028 - 2025 — Bojan Kovačević: Cádiz CF activates purchase clause from Partizan; permanent; contract to 2029 - 2024 — Veljko Birmančević: Toulouse (end of loan) → AC Sparta Prague; permanent; ~€2.3m; contract to 2027 - 2024 — Svetozar Marković: Partizan Belgrade → FC Viktoria Plzeň; permanent; three-year deal - 2025 — Kristijan Belić: AZ Alkmaar → Maccabi Tel Aviv; season-long deal to 2026 Fees shown are indicative estimates (not official). — — — — — — — — — —
Services
Quick Facts
This agency has been verified by Inter Agentcy. Information sourced from public records and verified sources.