PSG have been warned not to expect the best from summer signing Sergio Ramos.
The former Real Madrid captain missed PSG's preseason and is yet to make his debut due to nigging injuries.
Former Bordeaux fitness coach Éric Bédouet told Le Parisien: "In the middle of the season, we assume that an average player who stops for a month usually needs the double to regain his level before the injury.
"Then, we are talking about an extraordinary player, with exceptional professionalism and mentality. It can obviously go faster. But he still has to play because, whatever happens, it will take time to find his marks with his teammates and return to the top."