Free cheese announced by a Parisian (8)

I believe the answer is:

unfetter

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'free cheese' is the definition.
'unfetter' can be an answer for 'free' (I've seen this before). I am not certain of the 'cheese' bit.

'announced by a parisian' is the wordplay.
'announced' becomes 'fetter' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'by' is a charade indicator (letters next to each other).
'a parisian' becomes 'un'.
'fetter' put after 'un' is 'UNFETTER'.

Can you help me to learn more?

(Other definitions for unfetter that I've seen before include "free" , "Unchain, unshackle" .)

I've seen this clue in The Sunday Times.

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