OIS - Octagon International Soccer
Athens-to-Premier League Bridge

Greece

€42mm

Key Facts

Founded: Not publicly listed
Headquarters: Athens, Greece
Players: 57 (15 in 1st tiers) • Total market value: €42mm
FIFA/FA registration: Licensed agents
Languages: Greek; English; Turkish; Portuguese
Regions covered: Greece, Türkiye, Portugal, Spain, England
Email: info@oisagency.com
Instagram: https://www.instagram.com/ois.agency/
Facebook: https://www.facebook.com/oisagencyofficial
X: https://x.com/OIS_agency
LinkedIn: https://www.linkedin.com/company/oisagency/
TikTok: https://www.tiktok.com/@ois.agency

About

OIS is a 360° football representation and marketing agency focused on elite talent across Greece, Türkiye and Iberia with placements into top European leagues. The firm blends scouting and development with full off-pitch services, and collaborates with Golden Goal Sports Management and Vision Players to widen its network.

Key People

• CEO/Founder: Georgios (Greg) Panou — Owner

• Managing Director / Executive Director: Dimitris Karantzalos

• Partners / Licensed agents: Ogun Erdem (Partner); Jonathan Sousa (Partner, licensed)

• Head of Scouting: Yiannis Karaviotis

• Additional licensed/agent staff: Konstantinos Gkogkonas Gkogkolos; Dejan Mičić; Deniz Saritaç; Loran Vayloyan; Legal: Marios Tsampalas (Attorney)

Client Roster

Top players (current):

• Charalampos Kostoulas (Brighton & Hove Albion) — CF

• Christos Mouzakitis (Olympiacos Piraeus) — CM

• Luís Esteves (Gil Vicente) — AM

• Chiquinho (Olympiacos Piraeus) — AM

• Danilo Veiga (Lecce) — RB

• Athanasios Androutsos (OFI Crete) — CM

• Giannis Theodosoulakis (OFI Crete) — RW

• Konstantinos Kostoulas (OFI Crete) — CB

• Kamil Ahmet Çörekçi (Hatayspor) — RB

• Oğuz Kağan Güçtekin (Iğdır FK) — DM

Rising talents / U23:

• Jozhua Vertrouwd (Rayo Vallecano) — LB

• Arda Özçimen (Bandırmaspor) — GK

• Onur Başyiğit (Arnavutköy Bld.) — LB

• Theofilos Kakadiaris (Asteras Aktor) — GK

Coaches/Staff represented (selection):

• Sotiris Sylaidopoulos (Rio Ave) — Manager

• Christos Kontis (Panathinaikos) — Caretaker/Staff

• Vladimir Čepžanović (Fenerbahçe) — Athletic coach

Notable Deals

• 2025 — Charalampos Kostoulas: Olympiacos → Brighton & Hove Albion; ~€35m initial (≈£29.8–31.4m), rising with add-ons; five-year deal to 2030; record fee for a Greek club

• 2024–2025 — Konstantinos Kostoulas: Olympiacos → OFI Crete; long-term deal to 2028

Services

• Player representation & contract negotiations

• Transfer/loan structuring and deal execution

• Training, nutrition and performance support

• Image rights, sponsorships and media/PR

• Career planning and day-to-day player care

Partner Network

• Golden Goal Sports Management; Vision Players

• Brighton & Hove Albion; Olympiacos; OFI Crete; Hatayspor; Iğdır FK; Bandırmaspor; Gil Vicente

Track Record (last 3 seasons)

• Total transfers completed: 15+ senior/U23 moves across Greece, Türkiye and Portugal

• Deals ≥ €10m: At least one (Kostoulas to Brighton)

• Clients in top-5 leagues: Active (Premier League)

• National team clients: Greece youth/senior-pool clients across the portfolio

• Renewal/extension deals: Multiple domestic renewals across Greek/Turkish leagues

Approach & Philosophy

Relationship-driven and development-first: identify high-upside prospects, provide holistic support, and time step moves into elite environments. Partnerships expand scouting reach and deal flow across Southeastern Europe and Iberia.

Fees & Transparency

Operates under FFAR; no public fee ranges or dual-representation/expense policies disclosed.

Compliance & Reputation

• Disciplinary actions / sanctions: None publicly recorded

• Litigation / disputes: None located

• Media sentiment: Positive/neutral — buoyed by the record Kostoulas transfer and steady first-team placements