Stephane Ruffier was trying to clear a cross as he came rushing off of his line, but ended up taking out a team-mate and giving away a goal
Neven Subotic has been hospitalised after being knocked unconscious during Saint-Etienne's 3-2 defeat at Bordeaux on Wednesday.
The centre-back was smacked in the face by Saint-Etienne goalkeeper Stephane Ruffier in the buildup to Jimmy Briand's equaliser. Just five minutes after Saint-Etienne had taken the lead, Ruffier rushed off his line to punch clear a cross from Maxime Poundje but caught Subotic and subsequently missed the ball. It then fell to Briand who was able to usher it over the line to level the score after 22 minutes.