Outward pawn on reflection is under threat (3,3,4)
I believe the answer is:
for the chop
'under threat' is the definition.
(both can mean in danger)
'outward pawn on reflection' is the wordplay.
'outward' becomes 'forth' (I've seen this in another clue).
'pawn' becomes 'p'.
'on' is a charade indicator (letters next to each other).
'reflection' becomes 'echo' (echo is a kind of reflection).
'p' after 'echo' is 'echop'.
'forth'+'echop'='FOR THE CHOP'
'is' is the link.
(Other definitions for for the chop that I've seen before include "About to get fired" , "Why one may go to butcher" , "to close" .)