Bound to require credit, we hear (7)
I believe the answer is:
trussed
'bound' is the definition.
('truss' can be a synonym of 'bind')
'credit we hear' is the wordplay.
'credit' becomes 'trust' (trust is a kind of credit).
'we hear' shows a homophone (sound like).
'trust' is a homophone of 'TRUSSED'.
'to require' is the 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 trussed that I've seen before include "with restrictions on members" , "Dusters (anag) - bound" , "Bundled up" , "Secured" , "Bound up tightly" .)