Not sure whether to have it bound, perhaps? (2,5)
I believe the answer is:
in doubt
'not sure' is the definition.
(I've seen this before)
'it bound perhaps?' is the wordplay.
'perhaps?' indicates anagramming the letters (I've seen 'perhaps' mean this).
'it'+'bound'='itbound'
'itbound' anagrammed gives 'IN DOUBT'.
'whether to have' acts as a link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for in doubt that I've seen before include "Undecided" , "Dubious" , "far from fixed" , "Not sure" , "Open to question" .)