Possible Clues:

• Sullivan’s partner given a new start, the nut
• Some kind of nut
• Another name for the hazelnut
• Nut — left rib (anag)
• Nut to leave boy sated, we hear?
• Hazel, fine librettist, heading off
• Hazel's bet, reduced by uncertainty, withdrawn
• You'd need to be nuts to give Albert all he can take, by the sound of it