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International Sports Office (ISO)

Balkan-to-Elite Bridge

Serbia €70mm
20Players
€70mmPortfolio

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

D
Dejan Grgić – Founder, Licensed Agent Co-founder and licensed agent; active in football management since 2015 with a focus on identifying and supporting high-potential talent. Contacts: office@isoffice.rs (general) Instagram: https://www.instagram.com/darkoristicagent/ - Darko Ristić – Executive Director, Licensed Agent Executive Director and licensed agent; decision maker, leads representation operations and deal execution. Contacts: darkoristic@isoffice.rs, +381 64 9898898 - Borisav Djokić – Recruitment Manager and Scout Agency-listed agent involved in player representation and client support. Contacts: borisavdjokic@isoffice.rs - Ognjen Ivanović – Agent and Scout Involved in hands-on client work and career guidance. Contacts: ognjenivanovic@isoffice.rs - Nenad Bižić – Head of Scouting Leads scouting and recruitment, supported by an international scout structure. Contacts: nenadbizic@isoffice.rs - Additional staff (selected) Kristijan Djurdjević – Scout (kristijandjurdjevic@isoffice.rs) - Mario Lovrić – Scout (mariolovric@isoffice.rs) - Saša Savić – Scout (sasasavic@isoffice.rs) - Fabio Carleandro Da Silva – Scout (fabiodasilva@isoffice.rs) - Dušan Djokić – Marketing (dusandjokic@isoffice.rs) Licensed agents (publicly listed): Darko Ristić, Dejan Grgić
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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

Contract negotiationdomestic & international transfers/loansimage rights and sponsorshipsPR/branding and medialegal/tax liaisonrelocation and family supportperformance planning and long-term career strategy.

Quick Facts

HQSerbia
Portfolio€70mm
Verified Agency

This agency has been verified by Inter Agentcy. Information sourced from public records and verified sources.