The Arsenal star had been forced off during their defeat at the weekend, but he has travelled to Santiago and could feature on Thursday
Chile may have received a boost ahead of their crunch World Cup qualifying match against Argentina, with Alexis Sanchez reportedly fit to play.
The star striker scored in Arsenal's 3-1 Premier League defeat to West Brom on Saturday but had to be substituted in the second half after finding himself on the wrong end of a heavy James McClean tackle.
Gunners manager Arsene Wenger delivered a grim initial prognosis, claiming the forward's ankle had been left in an "absolutely terrible state".