Hand over nutters to be reformed (7)
I believe the answer is:
entrust
'hand over' is the definition.
(thesaurus)
'nutters to be reformed' is the wordplay.
'to be reformed' indicates anagramming the letters.
'nutters' is an anagram of 'ENTRUST'.
(Other definitions for entrust that I've seen before include "Place in someone's care for test run" , "Commend" , "Give for safekeeping" , "Give as responsibility, place in care of" , "Confide" .)