The 26-year-old left Tuesday’s training session after only 15 minutes, accompanied by the team's physiotherapist after suffering a pain in his ankle.

On Sunday, Brazil drew 1-1 with Switzerland, with Neymar playing the whole match for the first time in three months, after having been sidelined following surgery to his right foot.

Brazil will play Costa Rica on Friday in St. Petersburg and will finish their group campaign against Serbia on 27 June in Moscow.