Retire to the country, on about Tacitus being corrupt (9)

I believe the answer is:

rusticate

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'retire' is the definition.
(thesaurus)

'on about tacitus being corrupt' is the wordplay.
'on' becomes 're' (regarding).
'about' indicates putting letters inside.
'being corrupt' indicates anagramming the letters (a corrupted form).
'tacitus' with letters rearranged gives 'usticat'.
're' enclosing 'usticat' is 'RUSTICATE'.

'to the country' 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 rusticate that I've seen before include "Ban from college" , "Banish to countryside" , "Go to countryside" , "send down student" , "Rough up" .)

I've seen this clue in The Times.

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