Bond may be set up for strike (4)
I believe the answer is:
tonk
'strike' is the definition.
(informal term meaning to hit)
'bond may be set up for' is the wordplay.
I cannot really see how this works, but
'for' could be 'to' (eg both can mean 'in the opinion of') and 'to' is located in the answer.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for tonk that I've seen before include "Rod" , "Hit hard" , "from Australia is hit" .)