Freed of entanglements, volunteered (7)

I believe the answer is:

offered

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'volunteered' is the definition.
('offer' can be a synonym of 'volunteer')

'freed of entanglements' is the wordplay.
'freed of' anagrams to 'OFFERED'.
However, I'm not sure how this is indicated.

Can you help me to learn more?

(Other definitions for offered that I've seen before include "Supplied" , "Presented for acceptance or rejection" , "Volunteered" , "Expressed readiness (to do something)" , "Proposed" .)

I've seen this clue in The Globe and Mail.

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