Marcelo Alberto Bielsa Caldera ([maɾˈselo alˈβeɾto ˈβjelsa], nicknamed El Loco Bielsa [ˈloko ˈβjelsa], meaning 'The Madman Bielsa'; born 21 July 1955) is an Argentine professional football manager who is the current manager of the Uruguay national team. He is widely regarded as one of the most influential coaches of all time. Bielsa is a former player having played as a defender for Newell's Old Boys, Instituto and Argentino de Rosario.
https://en.wikipedia.org/wiki/Marcelo_Bielsa