Singapore - Neymar limped off injured early on as Brazil played out a 1-1 friendly draw against a spirited Nigeria at the Singapore National Stadium on Sunday.
Neymar's return to Champions League action may now be delayed, with PSG facing Club Brugge on October 22 after the world's most expensive player missed the first two games through suspension.
"My career has taught me that I would never use a player if he was not in condition to play. It would be irresponsible of me to risk a player carrying an injury."
The smart strike was the English-born player's second goal in two appearance for Nigeria after the Rangers midfielder scored on his debut against Ukraine last month.
Tite's men poured forward in search of a winner with Coutinho guilty of wasting a glorious opportunity with five minutes remaining when the unmarked midfielder's weak effort was cleared off the line by Semi Ajayi.