Lucho GonzÃ lez ( born 19 January 1981 ) is an Argentine football player . He plays for Olympique Marseille and Argentina national team . Luis Ã `` scar `` Lucho '' GonzÃ lez ( born 19 January 1981 in Buenos Aires ) is an Argentine footballer who plays for Olympique de Marseille in Ligue 1 .