Neymar missed the game after suffering a right foot injury, and PSG duly saw their perfect start to the Ligue 1 season come to an end in their first match without the 25-year-old since his world record move from Barcelona.
"We will wait until tomorrow (Sunday) to see about his return," said Emery. "There are three days left to prepare for the match, but I think that if everything goes normally he will be back."
The capital-city side have seen their early lead at the top of the table cut to one point this weekend after reigning champions Monaco thumped Lille on Friday.
Emery wants his men to be able to break down stubborn opposition without their key playmaker.
"We need all the players, when a player is missing it's important to maintain the level and pace," the Spaniard added, after his side mustered just one shot on target. "Others have had time to play and they've helped the team, but we can't say that the match would have been different with Neymar. We will play more matches with Neymar this season, but we also need to work (when we're) without a player."
Rising star Kylian Mbappe had the best of the visitors' chances at the Stade de la Mosson, but the 18-year-old was profligate in front of goal.
Without Neymar pulling the strings, Paris were toothless for the first 45 minutes, with some players perhaps keeping one eye on the Bayern game.
PSG did finally create a decent chance shortly after the restart, as Montpellier threw away possession on the edge of their own area and Mbappe curled a tame shot straight at home goalkeeper Benjamin Lecomte.
The teenager, who will become the world's second-most expensive player behind Neymar when he completes his permanent transfer from Monaco next year, should have broken the deadlock, but headed wide when unmarked from only a few yards out.
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