Said Poitier is in southern metropolis (6)

I believe the answer is:

sydney

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'metropolis' is the definition.
(I know that Sydney is or was a state capital)

I can't explain the rest of the clue.

(Other definitions for sydney that I've seen before include "Last Olympic city" , "Largest Australian city" , "Australian city with famous opera house" , "Australian port" , "State capital of New South Wales" .)

I've seen this clue in The Irish Times.

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