Bondsman's concern (4)
I believe the answer is:
bail
'bondsman's concern' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for bail that I've seen before include "Security for release - part of a wicket" , "Money lodged to secure release pending trial" , "Horizontal piece of cricket wicket" , "Partition in stable" , "Piece of cricket equipment; surety" .)