Neymar was stretchered off during Paris Saint-Germain’s 3-0 win over Marseille on Sunday after appearing to twist his ankle.
PSG were forced to play the final 10 minutes of the game at the Parc des Princes with a man down as they had already used all of their substitutes when the Brazilian left the field of play.
The world’s most expensive player is now a doubt for PSG’s Champions League second-leg tie against Real Madrid in the French capital on March 6.
The fixture against Europe’s reigning champions hangs in the balance after Real Madrid earned a 3-1 at the Santiago Bernabeu on February 14.
Neymar – who has 29 goals and 17 assists this term – is the club’s second-highest scorer and has featured in every minute of PSG’s Champions League campaign thus far.
The 26-year-old was involved in two of the goals before coming off, with Edinson Cavani and Kylian Mbappe ensuring PSG extended their lead at the top of Ligue 1 to 14 points.
Mbappe’s 10th-minute opener made him the youngest ever goalscorer in Le Classique at the age of 19.
Sky Sports