Former Barcelona and Liverpool player Javier Mascherano will take on his first coaching role when he takes over as Argentina Under-20 boss in January.
Mascherano called time on his playing career in 2020 having last played for Estudiantes.
A versatile defensive player, he won five La Liga titles and two Champions Leagues in eight years at Barcelona.
He started his career with River Plate and moved to West Ham in 2006 following a spell with Corinthians.
Signed by Liverpool in February 2007, he helped the Reds reach the Champions League final that year before moving to Barcelona in 2010.