Paris St-Germain boss Thomas Tuchel says it'll be "super difficult" for Neymar to be suitable their Champions League tie against Manchester United next month.
The Brazil forward suffered a fractured metatarsal against Strassburg in the French Cup on Wednesday.
PSG travel to old Trafford for the first leg of their last-16 tie on 12 Feb.
It remains too early to talk about a return date," said Tuchel.
Despite Neymar's absence, PSG maintained their unbeaten start to the Ligue 1 season with a comfortable 4-1 win over Rennes on Sunday.