Matthieu Grossin is a French football agent and co-founder of Alinea, an international player representation agency with a strong connection to the French, Colombian, South American and North American football markets. Based in Paris, Grossin works within a cross-border agency structure that also includes operations connected to Miami, Bogotá and Cali, reflecting Alinea’s focus on international player pathways and global football opportunities. His work has included players competing in Colombia, France, England, Russia, Argentina, Portugal, MLS and other markets, reflecting experience with both emerging prospects and established senior professionals. Through Alinea, Grossin’s approach centers on more than basic contract negotiation. The agency model emphasizes player identification, development, legal support, financial guidance, personal brand growth and long-term career planning. His profile reflects the modern international agent role: helping players evaluate club fit, understand timing, manage transfer opportunities and build sustainable careers across different countries, leagues and football cultures.