UEFA have opened disciplinary proceedings against six clubs including Manchester City and Real Madrid after incidents at Champions League games this week.
Olympiakos were charged after their fans unfurled a banner that UEFA deemed to be racist in their 3-1 loss at Red Star Belgrade. They were also charged with delaying kickoff.
Red Star were charged with improper conduct after five players, including two substitutes, picked up bookings.
UEFA said its Control, Ethics and Disciplinary Body would meet...