Soccer manager and former player known for being the coach of the Colombian and Argentine national team. As the youth coach for Argentina, he is a three-time FIFA World Youth Championship winner and a two-time Under-20 South American Youth Championship winner.
As a player, he played for Argentinos Juniors from 1970 to 1974.
He won consecutive South American Coach of the Year awards in 2012 and 2013.
He has children named Oscar and Raquel.
He coached Colombia's James Rodriguez at the 2014 FIFA World Cup.