Neymar has been ruled out of PSG's Champions League last-16 second leg against Barcelona on Wednesday.
A PSG statement on Tuesday said the Brazilian, who left Barcelona for the Ligue 1 side for a world record fee of €222million in 2017, was continuing an individual recovery programme from a thigh injury sustained last month.
Neymar missed the first leg of the tie at the Camp Nou but his absence barely affected his side, who romped to a 4-1 win thanks to a Kylian Mbappe hat-trick.
PSG's star forward picked up the injury during a 1-0 Coupe de France victory at Caen in February.
Neymar had a grade two tear of his left adductor.
Although the Brazilian has been involved in light training with his team-mates, the game against his former employers will come too soon.