Radamel Falcao could miss the World Cup after picking up an injury in AS Monaco's Coupe de France win against Monts D'or Azergues.
The French giants beat the fourth tier side 3-0 but saw their star striker Falcao stretchered off after a tackle from Soner Ertek.
The Colombian had scored the opener in the 29th minute before leaving the game due to a injury to his left knee.
Early reports have suggested the striker could be set for a long absence from the side and could potentially miss the World Cup but results can not be confirmed until Falcao has undergone a series of medical tests.
A club sentence said, according to Sky Sports: "Radamel Falcao has been injured on his left knee.
"We must wait for follow-up tests in the coming days to be precise about the exact nature of the injury."
If Falcao is out for the long term it will be a huge blow for Monaco who are looking to win Ligue One and currently sit only five points behind leaders PSG.
The former Athletico man has scored nine goals in 17 appearances this season and is Monaco's top scorer.
Monaco manager Claudio Ranieri was disappointed with the officials after they ignored his views on the toughness of the game.
Ranieri said: "On many occasions, before the injury to Radamel, I drew the attention of the fourth official to the hardness of the game which was beginning to develop and on the danger that it posed to the players.
"I wasn't listened to and that's unfortunately not the first time that we have paid the consequences.
"It's very regrettable for French football, the players who make the game are not protected well enough by the referees."
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