Bill departed, as a man found innocent (9)
I believe the answer is:
acquitted
'found innocent' is the definition.
(I've seen this in another clue)
'bill departed' is the wordplay.
'bill' becomes 'ac' (short for account).
'departed' becomes 'quitted' ('quit' can be a synonym of 'depart').
'ac'+'quitted'='ACQUITTED'
'as a man' 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 acquitted that I've seen before include "Found not guilty and discharged" , "Settled" , "Absolved" .)