Mauricio Pochettino hopes that Neymar has not sustained a serious injury, though conceded the images he has seen of the incident do not look good.
Neymar had to be taken off on a stretcher late on after suffering an ankle injury in Paris Saint-Germain's win over Saint-Etienne on Sunday, shortly after Angel Di Maria had made it 2-1 to the Ligue 1 leaders.
Marquinhos then headed in his second goal of the game to round off a difficult 3-1 victory, though focus was on Neymar's injury in Pochettino's post-match media duties.
Neymar was pictured leaving the ground on crutches and while hopeful the forward will make a swift recovery, Pochettino explained PSG must wait for a full diagnosis on Monday.
"There is nothing more to say for the moment, it is the pain he felt in the leg with his ankle that turned. We will have the exams tomorrow and we will see," Pochettino told a news conference.
Pochettino had previously told Amazon Prime: "We will have to see this tomorrow but from the images, I hope that it's not a big deal and that he will be back with the squad quickly. But the action is not good."
Neymar subsequently posted an update to his official Instagram account.
"Let's recover, unfortunately these setbacks are part of an athlete's life," he wrote. "Now that's what you have, lift your head and let's go. I'll come back better and stronger."
Should Neymar face a lengthy absence, PSG can at least rest assured they can still field a star-studded front three, with Di Maria proving his worth against Saint-Etienne as he scored in successive league appearances for the first time since November 2019.
PSG also, of course, have Lionel Messi, who provided all three assists in the victory – the third time in his career he has set up three goals in a single league match.
At the back, Sergio Ramos made his long-awaited bow, becoming PSG's oldest debutant since David Beckham in 2013.
Denis Bouanga put Saint-Etienne ahead, meaning PSG came back to win after conceding the opening goal for the fifth time in Ligue 1 this season, already equalling their best tally for comeback victories in a full season, set four times before (2014-15, 2011-12, 2003-04, 1985-86).
