Possible Clues:

• A specific prohibition for Oedipus?
• The prohibition of an ancient city
• Ancient Greek sailor turning in after that
• Oedipus, for example, goes back to a time when players couldn't perform in both Croker and Dalymount
• Native of one ancient Greek or Egyptian city
• Two articles about bishop of ancient city
• Chap from old city prohibited, in principle, the neighbour's games
• Greek embargo after Tsipras's first meeting with ambassador?
• Next to bag degree in ancient Greek
• Subsequently secures degree in ancient Greek