Possible Clues:

• Old European prohibition restricting the players switching codes in past
• Prohibition after the ancient Greek
• One in ancient city at that time endlessly subject to censorship
• 'The Outlaw' - a Greek or Egyptian citizen
• Oedipus, for one
• Old citizen’s article connected with prohibition
• An article to veto on old Egyptian
• Article by graduate has name of old city
• Greek and, in those days, a bachelor
• Prohibition slapped on article from old city