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By and For Sport Management

France–Spain Bridge

Spain €28mm
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14Players
€28mmPortfolio

About

By & For Sport Management is a boutique Franco–Spanish agency built around the career of world champion Antoine Griezmann and later professionalised into a full multi-sport representation company. Operating from Barcelona, Madrid and Paris, the firm focuses on high-potential talents in France and Spain and cross-border moves between LaLiga, Ligue 1, Serie A and emerging markets. While football is the core, the group also represents Olympic judoka Daria Bilodid through its wider sports arm, underlining a broader elite-athlete focus. Bespoke career planning, family-style support and long-term relationships are central to its positioning.

Key People

C
CEO / Founder: Maud Griezmann
Founder and CEO; created By & For Sport Management in 2019 and oversees strategy and key client relationships, including her brother Antoine Griezmann. Email: maud.griezmann@by-and-for.com - General Manager: Héctor Fernández – Journalist and long-time confidant of Griezmann and Thibaut Courtois, now leading day-to-day operations and high-level negotiations. FIFA licensed agent. Email: hector.fernandez@by-and-for.com LinkedIn : https://www.linkedin.com/in/h%C3%A9ctor-fern%C3%A1ndez - Deputy General Manager: Mario Torrejon – Supporting strategic development and media-facing projects. FIFA licensed agent. Email: mario.torrejon@by-and-for.com - Communication Director: André De Souza : https://www.linkedin.com/in/andre2sousa/ Email: andre.desousa@by-and-for.com - Licensed agents: Jean-Baptiste Michaud – FIFA licensed agent; front-line dealmaker in the French and Spanish markets. Email: jeanbaptiste.michaud@by-and-for.com - Nicolas Falaschi – FIFA & FFF licensed agent for BY AND FOR FRANCE; registered on the French FA list with By & For as his affiliated company. Email: nicolas.falashi@byandfor.com - Antonio Martín Guirado – FIFA & FFF licensed agent involved with By & For’s French and Spanish operations.

Notable Deals

2025 – Antoine Griezmann (Atlético de Madrid) Contract extension negotiated to keep the France legend at Atlético through the latter stages of his career, amid external interest and speculation. - 2025 – Jon Mikel Aramburu (Real Sociedad) Renewal with Real Sociedad securing a long-term deal after his breakthrough appearances in LaLiga, consolidating his role in the Basque club’s future plans. - 2024–2025 – Toni Fernández (FC Barcelona) Multi-year extension with Barça until 2027 (plus option years), confirming one of La Masia’s most-hyped attacking talents under the guidance of By & For. - 2023 – Aarón Martín (FSV Mainz 05 → Genoa CFC) Free transfer to Genoa, engineered to relaunch the left-back’s career in Serie A with a multi-season contract. - 2023–2024 – Axel Guéguin (Montpellier HSC) Professional promotion and integration into Montpellier’s first-team environment, highlighting By & For’s pathway work from academy to senior football. - 2023–2024 – Eder Sarabia (Elche CF) Head coach appointment and subsequent renewal after progress with Elche, illustrating the agency’s reach into high-level staff representation. - 2023–2024 – Daria Bilodid (Judo) Elite sponsorship and commercial representation around Olympic campaigns through the agency’s multi-sport network. Fees shown are indicative estimates (not official).

Services

- Contract negotiation and renewals (players and coaches) - Domestic and international transfers and loans between France, Spain, Italy and emerging markets - Image rights structuring and commercial endorsements - Sponsorships, brand partnerships and media activations - PR, branding and content production via By & For Studios - Legal and tax coordination with specialist partner law firms - Relocation support for players and families (housing, schooling, logistics) - Performance monitoring and basic data/analytics support - Wellbeing, mental support and injury management coordination - Long-term career and post-career planning for elite and youth athletes

Quick Facts

HQSpain
Portfolio€28mm

Contact

Verified Agency

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