Bond again exposing some backward counterfeiters (5)
I believe the answer is:
retie
'bond again' is the definition.
(I know this)
'some backward counterfeiters' is the wordplay.
'backward' says the letters should be written in reverse.
'some' indicates the answer is hidden within the clue (some of the parts of the word are used).
'eiter' is hidden in the letters of 'counterfeiters'.
'eiter' reversed gives 'RETIE'.
'exposing' is the link.
(Other definitions for retie that I've seen before include "restore connection" , "Make knot or bow again" , "Link up again" , "Bind again" , "make another knot" .)