Neymar suffered a worrying injury during Paris Saint-Germain's Ligue 1 match on Sunday.
The Brazilian went down injured in the final minutes of the French table-toppers' victory, and a stretcher was brought out to take him off the field.
We await news on the extent of Neymar's injury, but teammates including Lionel Messi and Angel Di Maria looked on with concern as the forward was taken off.
It rounded off a frustrating afternoon for the PSG man on a personal level, after he saw an early goal disallowed for offside, and he faces an anxious wait to learn the extent of his injury.
PSG were still able to secure victory, with Marquinhos scoring twice and Di Maria also finding the net as Mauricio Pochettino's side came from behind to win 3-1 against their 10-man opponents.
PSG were frustrated for much of the first half, with Dennis Bouanga giving Saint-Etienne the lead after Neymar's goal was chalked off following a VAR check.
However, a red card for Timothee Kolodziejczak for a foul on Kylian Mbappe saw the pendulum swing the way of the Parisian side, with Marquinhos heading home an equaliser from the resulting free-kick.
Lionel Messi was the provider for all three goals, feeding Di Maria with just 11 minutes remaining as Saint-Etienne's resistance was finally broken.
Young English goalkeeper Etienne Green made a number of saves to deny the visitors, but was helpless to deny the Argentine from close-range.
Brazil defender Marquinhos rounded off the scoring in stoppage time, after Neymar had been replaced by youngster Eric Ebimbe.
Paris Saint-Germain have already secured their qualification from their Champions League group with a game to spare, while the victory at Stade Geoffroy-Guichard kept their lead at the top of Ligue 1 in double-figures.
However, they will be worried about the possibility of losing their record signing for an extended period, having suffered in Europe in recent years when the 29-year-old has been unavailable.
Image:AFP via Getty Images)
Defeat against Manchester City in PSG's last European game means they are guaranteed a second-place finish in their group, setting them up for a potential last-16 clash with the likes of Bayern Munich or Manchester United.
United notably delivered a comeback to eliminate the French side from the 2018-19 edition of the competition, when Neymar was forced to watch on from the stands due to injury.