Possible Clues:

• City ace on end of line, old boy
• Corrupt board after business in Spanish city
• 1,000 years ago this was the largest city in Western Europe
• Spanish spelling of an ancient city on the Guadalquivir
• City in Andalusia, Spain, home to the Great Mosque
• City of southern Spain
• Andalusian city with a cathedral (the Mezquita) that was formerly a mosque
• Cab door being slammed in the city
• Argentine city
• Company board corrupt in Spanish location