Injured Higuain doubtful starter for Argentina
Argentina's footballers (L-R) forward Gonzalo Higuain, defender Pablo Zabaleta, midfielder Angel Di Maria and forward Lionel Messi joke during a training session at "Cidade do Galo", their base camp in Vespasiano, on June 12, 2014 - by Juan Mabromata
In Thursday's training session, Napoli striker Higuain was replaced by Paris Saint-Germain's Ezequiel Lavezzi.
Inter Milan striker Rodrigo Palacio was also on the sidelines on Thursday after suffering an ankle injury in the 3-0 warm-up win over Trinidad last week.
Meanwhile, defender Ezequiel Garay and midfielder Lucas Biglia claim Argentina have no fear and will go on the attack at the World Cup.
"We're Argentina and we must start winning. We don't fear anyone," said Garay, who said the team would be focusing on supplying Lionel Messi.
"We have to try to give Leo the ball in the best way so afterwards he can destabilise (the opposition) as he's always done."
Biglia said the team was united but warned that their attacking instincts might get the better of them.
"The first defender gets up with the forwards and the first striker gets back with the defenders," said the 28-year-old.
"It makes things complicated because it's a very attacking side."
But Garay, 27, believes the attacking potential in the team is what could make the difference.
"We know that in any moment in a match we will have to all defend, (but) the potential we have up front is impressive and for this reason we have to do the dirty work (defending) so we can give them good ball."
Argentina are in Group F at the World Cup along with Bosnia-Herzegovina, who they play on Monday, Nigeria and Iran.