One returning to identify Charlie (5)

I believe the answer is:

idiot

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'charlie' is the definition.
(I've seen this before)

'one returning to' is the wordplay.
'one' becomes 'idi' (I can't explain this - if you can you should give a lot more credence to this answer).
'returning' says the letters should be written backwards.
'to' backwards is 'ot'.
'idi'+'ot'='IDIOT'

'identify' acts as a link.

Can you help me to learn more?

(Other definitions for idiot that I've seen before include "Dunce" , "Stupid person" , "nutter" , "Jackass" , "Silly ass" .)

I've seen this clue in The Times.

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