Nothing to fix — article has been discarded (3)
I believe the answer is:
nil
'nothing' is the definition.
(eg nil is zero in football)
'fix article has been discarded' is the wordplay.
'fix' becomes 'nail' (I've seen this before).
'article' becomes 'a' (the indefinite article in English).
'has been discarded' is a deletion indicator.
'nail' with 'a' taken out is 'NIL'.
'to' acts as a link.
(Other definitions for nil that I've seen before include "Lacking value" , "Nothing, no value" , "Don't despair - . . . desperandum" , "none" , "0" .)