Editing novel that may be set on fire (7)
I believe the answer is:
ignited
'set on fire' is the definition.
(I've seen this before)
'editing novel' is the wordplay.
'novel' indicates anagramming the letters (letters in a new or novel order).
'editing' is an anagram of 'IGNITED'.
'that may be' is the link.
(Other definitions for ignited that I've seen before include "fired" , "Kindled" , "Set on fire" , "Lit" , "Set alight" .)