Light match to see legitimate target (4,4)
I believe the answer is:
fair game
'legitimate target' is the definition.
(I've seen this before)
'light match' is the wordplay.
'light' becomes 'fair' (I've seen this in another clue).
'match' becomes 'game' (I've seen this before).
'fair'+'game'='FAIR GAME'
'to see' acts as a link.
(Other definitions for fair game that I've seen before include "Reasonable target?" , "Legitimate target in equitable contest" , "person open to criticism" , "Legitimate target like blonde animal" , "Hoop-la may be" .)