ArgentinaPlaying career
9Boca Juniors1998–1999
AC Milan1999–2004
San Lorenzo de Almagro2000–2001
Deportivo Alavés2001–2002
Atlético Madrid2002–2003
Argentina men's national association football team2003–2014
Villarreal CF2003–2004
Deportivo de La Coruña2004–2008
Newcastle United F.C.2008–present