Possible Clues:

• Zealot on charter round island promoting growth
• Rent unit (anag.)
• Sustenance teachers finally sought, eating nothing in Paris
• It nourishes teachers ultimately content with nothing in Paris
• Boon of consumption
• Food fan one tucking in to split
• Character by river absorbing current source of nourishment
• Food obtained from Greek character one's thrown in river
• Perhaps fat Greek character will accompany one in river
• Lunatic tore round island for sustenance