Edinson Cavani faces a race against time to prove his fitness ahead of Paris-Saint Germain's season opener against Montpellier on Friday.
Striker Cavani, the club's record signing, was late back to pre-season with the club after participating in the Confederations Cup with Uruguay earlier this summer.
The £55million player only started training with the rest of his teammates on Tuesday after having previously undergone a specific individual programme.
It could mean that the 26-year-old could yet be fit to face Montpellier at the Stade de la Mosson.
But manager Laurent Blanc has said a decision will be made on the ex-Napoli man's inclusion with the squad on Thursday.
"We're going to give ourselves another 24 hours to see if he'll be available to the group in Montpellier," said Blanc in a press conference.
"If he continuers to progress as he is doing, he could play, but he still needs more time to prepare."
If the Uruguayan doesn't prove his fitness in time, then Blanc will look to Zlatan Ibrahimovic and Ezequiel Lavezzi for goals as PSG set out to defend their Ligue 1 title.
Meanwhile, Blanc also has Italian midfielder Thiago Motta trying to prove his fitness after sitting out training due to a calf problem.
The 30-year-old missed large chunks of last season and will be desperately hoping to make up for lost time.
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