Ernesto Valverde

Valverde's record speaks for itself. He is the longest-serving manager in Athletic Club's history, having coached more matches than anyone else at the club. His domestic dominance with Olympiacos, winning four league titles and two cups across three spells, made him a legend in Greece. At Barcelona, he delivered back-to-back La Liga titles, a rare feat in a league dominated by Real Madrid. His calm, methodical approach has earned him respect across the football world, and his ability to adapt to different clubs and leagues is a testament to his tactical intelligence.