Ronald Koeman is a former professional football player and a well-known football manager from the Netherlands. Born on March 21, 1963, he played as a defender and is famous for his powerful free kicks. Koeman had a successful playing career, notably with clubs like Ajax, Barcelona, and Feyenoord, and he also represented the Dutch national team. After retiring as a player, Koeman transitioned into management, coaching various clubs, including Southampton, Everton, and the Netherlands national team. He is recognized for his tactical knowledge and ability to develop young talent, making significant contributions to the teams he has managed.