Mason Greenwood and former Arsenal star Matteo Guendouzi are the subject of a disciplinary investigation by UEFA, their club Fenerbahce have confirmed.
The pair were involved in the ugly scenes that followed the Turkish side's feisty Champions League qualifier against Lyon last month.
Fenerbahce progressed to the League Phase after winning the second leg 2-1, which gave them a 3-2 aggregate triumph.
However, at full-time, Guendouzi, who previously played for Lyon's arch-rivals Marseille, was at the centre of heated scenes as he sparked a wild brawl and appeared to be attacked by a member of the French side's coaching staff.
Greenwood was also involved in the trouble and grabbed his crotch before he pulled a face in the direction of the home fans.
