Argentina's goalkeeper Sergio Romero during the anthem ceremony before a friendly football match against Slovenia at La Plata stadium in La Plata, Buenos Aires, Argentina on June 7, 2014 in preparation of the 2014 FIFA World Cup Brazil to be held between June 12 and July 13. AFP PHOTO / Alejandro PAGNI

Argentina's forward Ezequiel Lavezzi gestures during the anthem ceremony before a friendly football match against Slovenia at La Plata stadium in La Plata, Buenos Aires, Argentina on June 7, 2014 in preparation of the 2014 FIFA World Cup Brazil to be held between June 12 and July 13. AFP PHOTO / Alejandro PAGNI

Argentina's midfielder Ricky Alvarez gestures during the anthem ceremony before a friendly football match against Slovenia at La Plata stadium in La Plata, Buenos Aires, Argentina on June 7, 2014 in preparation of the 2014 FIFA World Cup Brazil to be held between June 12 and July 13. AFP PHOTO / Alejandro PAGNI

Argentina's midfielder Augusto Fernandez gestures during the anthem ceremony before a friendly football match against Slovenia at La Plata stadium in La Plata, Buenos Aires, Argentina on June 7, 2014 in preparation of the 2014 FIFA World Cup Brazil to be held between June 12 and July 13. AFP PHOTO / Alejandro PAGNI

Argentina's midfielder Enzo Perez gestures during the anthem ceremony before a friendly football match against Slovenia at La Plata stadium in La Plata, Buenos Aires, Argentina on June 7, 2014 in preparation of the 2014 FIFA World Cup Brazil to be held between June 12 and July 13. AFP PHOTO / Alejandro PAGNI

Argentina's midfielder Lucas Biglia gestures during the anthem ceremony before a friendly football match against Slovenia at La Plata stadium in La Plata, Buenos Aires, Argentina on June 7, 2014 in preparation of the 2014 FIFA World Cup Brazil to be held between June 12 and July 13. AFP PHOTO / Alejandro PAGNI

Argentina's midfielder Javier Mascherano gestures during the anthem ceremony before a friendly football match against Slovenia at La Plata stadium in La Plata, Buenos Aires, Argentina on June 7, 2014 in preparation of the 2014 FIFA World Cup Brazil to be held between June 12 and July 13. AFP PHOTO / Alejandro PAGNI

Argentina's midfielder Maximiliano Rodriguez gestures during the anthem ceremony before a friendly football match against Slovenia at La Plata stadium in La Plata, Buenos Aires, Argentina on June 7, 2014 in preparation of the 2014 FIFA World Cup Brazil to be held between June 12 and July 13. AFP PHOTO / Alejandro PAGNI

Argentina's defender Jose Basanta gestures during the anthem ceremony before a friendly football match against Slovenia at La Plata stadium in La Plata, Buenos Aires, Argentina on June 7, 2014 in preparation of the 2014 FIFA World Cup Brazil to be held between June 12 and July 13. AFP PHOTO / Alejandro PAGNI

Argentina's defender Federico Fernandez gestures during the anthem ceremony before a friendly football match against Slovenia at La Plata stadium in La Plata, Buenos Aires, Argentina on June 7, 2014 in preparation of the 2014 FIFA World Cup Brazil to be held between June 12 and July 13. AFP PHOTO / Alejandro PAGNI

Argentina's defender Marcos Rojo gestures during the anthem ceremony before a friendly football match against Slovenia at La Plata stadium in La Plata, Buenos Aires, Argentina on June 7, 2014 in preparation of the 2014 FIFA World Cup Brazil to be held between June 12 and July 13. AFP PHOTO / Alejandro PAGNI

Argentina's forward Ezequiel Lavezzi drives the ball during a friendly football match against Slovenia, in preparation for the Brazil 2014 FIFA World Cup, at La Plata stadium in La Plata, Buenos Aires, Argentina on June 6, 2014. AFP PHOTO / MAXI FAILLA

Argentina's forward Lionel Messi drives the ball during a friendly football match against Slovenia, in preparation for the Brazil 2014 FIFA World Cup, at La Plata stadium in La Plata, Buenos Aires, Argentina on June 6, 2014. AFP PHOTO / MAXI FAILLA

Argentina's midfielder Javier Mascherano drives the ball during a friendly football match against Slovenia, in preparation for the Brazil 2014 FIFA World Cup, at La Plata stadium in La Plata, Buenos Aires, Argentina on June 6, 2014. AFP PHOTO / MAXI FAILLA

Argentina's forward Sergio Aguero drives the ball during a friendly football match against Slovenia, in preparation for the Brazil 2014 FIFA World Cup, at La Plata stadium in La Plata, Buenos Aires, Argentina on June 6, 2014. AFP PHOTO / MAXI FAILLA

Argentina's midfielder Fernando Gago drives the ball during a friendly football match against Slovenia, in preparation for the Brazil 2014 FIFA World Cup, at La Plata stadium in La Plata, Buenos Aires, Argentina on June 6, 2014. AFP PHOTO / MAXI FAILLA

Argentina's forward Angel Di Maria drives the ball during a friendly football match against Slovenia, in preparation for the Brazil 2014 FIFA World Cup, at La Plata stadium in La Plata, Buenos Aires, Argentina on June 6, 2014. AFP PHOTO / MAXI FAILLA

Handout picture released by the AFA press office (Argentine Football Assosiation) of Argentina's defender Hugo Campagnaro posing for the official photo in Ezeiza, Buenos Aires, Argentina on June 6, 2014. Argentina squad will travel on June 9 to take part in the 2014 FIFA World Cup Brazil to be held between June 12 and July 13. AFP PHOTO / AFA PRESS OFFICE

Handout picture released by the AFA press office (Argentine Football Assosiation) of Argentina's defender Martin Demichelis posing for the official photo in Ezeiza, Buenos Aires, Argentina on June 6, 2014. Argentina squad will travel on June 9 to take part in the 2014 FIFA World Cup Brazil to be held between June 12 and July 13. AFP PHOTO / AFA PRESS OFFICE

Handout picture released by the AFA press office (Argentine Football Assosiation) of Argentina's defender Federico Fernandez posing for the official photo in Ezeiza, Buenos Aires, Argentina on June 6, 2014. Argentina squad will travel on June 9 to take part in the 2014 FIFA World Cup Brazil to be held between June 12 and July 13. AFP PHOTO / AFA PRESS OFFICE