Possible Clues:

• Prohibit section of cartoon film about a European city
• Arab once struggling across line in Olympic venue
• Home to the largest football stadium in Europe
• Clare watering hole opens with free loan of Iberian port?
• Only Spanish city to host the Olympics
• There's a strange oracle ban in the city
• Prohibit a clone being developed in this city
• Catalan capital
• Largest city in Catalonia
• Marine creature turned up alone, shivering in Spanish port