Brazil coach Tite is adamant Neymar had shown no sign of injury before Sunday's 1-1 friendly draw with Nigeria, in which the forward was withdrawn after 12 minutes due to leg discomfort.
Neymar was named in Brazil's starting XI for the friendly in Singapore but appeared to reach for the back of his left leg as he made an early exit.
He was then seen in conversation with a member of Brazil's staff on the bench, though Neymar did not look to be in significant pain.
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Paris Saint-Germain must now hope that their star forward, recently reconciled with the team following a lengthy summer stand-off over his possible Barcelona return, does not face another spell on the sidelines.