Manchester City will once again be sweating over the fitness of striker Sergio Aguero, who was forced out of Argentina training on Sunday.
Aguero appeared to suffer a calf problem during a training session ahead of the World Cup qualifier against Paraguay on Tuesday.
He is expected to undergo a scan to determine the extent of the problem on Monday.
The 28-year-old pulled out of the Argentina squad for the previous round of qualifiers in September due to a calf problem.
City’s two other Argentina internationals, Pablo Zabaleta and Nicolas Otamendi, are suspended for the match in Cordoba and flew back to Manchester on Sunday.
City right-back Bacary Sagna, who returned to Manchester over the weekend after injuring his hamstring during France’s victory over Bulgaria on Friday night, is expected to be out of action for a month.