Possible Clues:

• Unclear quality of work a financial centre goes after
• A bit thick so to have work over a town
• Obstruction of light work by a financial district
• Work with a business community — there's a lack of transparency
• Lucidity's opposite
• Cloudiness
• Lack of clarity in article, in work referenced by unknown
• Cloudiness over outskirts of Palma town
• Lack of transparency in a business community undermining work
• In book previously mentioned, a yen for unintelligibility