May leave liberal West African country (4,2,2)

I believe the answer is:

free to go

'may leave' is the definition.
(if you're free to go you may leave)

'liberal west african country' is the wordplay.
'liberal' becomes 'free' (I've seen this before).
'west african country' becomes 'togo' (country in West Africa).
'free'+'togo'='FREE TO GO'

I've seen this clue in The Guardian.

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