A rib injury has reportedly sidelined the 25-year-old, although head coach Unai Emery offered little suggestion of a fitness problem for the star striker in his pre-match media conference.
"We are preparing for the match against Nantes with the entire squad," he said on Friday.
"Edinson Cavani and Javier Pastore will rejoin the squad when they have caught up the training days they missed.
"We have two more sessions ahead of Sunday's match. We will see how the players recover from the Amiens match. I think everybody should be fine.
"Only Thiago Motta is working individually to come back from injury."
However, when the travelling squad was confirmed by PSG later on Saturday, Neymar was a notable absentee – along with Pastore.
Neymar has had no problems adjusting to Ligue 1, scoring 11 goals for PSG in just 14 games so far, and has scored 20 times in all competitions.
Emery was forced to address questions over Neymar's future this week, with the manager insisting his squad will not be shaken by over talk of Real Madrid's interest in the star attacker.