Robert Huth and Marouane Fellaini have been charged with violent conduct by the FA following an incident during their teams clash on Saturday.
The incident occurred in the 21st minute of the match and although the referee did not see it, television replays appeared to show Huth pulling Fellaini's hair before the Belgian threw him an elbow to the face.
A statement from the FA read: "Marouane Fellaini and Robert Huth have both been charged for alleged acts of violent conduct which were not seen by the match officials but caught on video.
"The Manchester United midfielder and Leicester City defender were involved in an incident in the 21st minute of their game on Sunday."
Both players have until 6pm on Wednesday to reply to the charge.