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Sicilians
possibly
expelling
a
Milanese,
awkwardly
(7)
Sicilians possibly expelling a Milanese, awkwardly (7)
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The definition is at the beginning of the clue.
How the clue works
Sicilians possibly is your definition — they're islanders, after all. Take MILANESE, kick out the A ("expelling a"), then jumble up what's left (MILNESE) with "awkwardly" as your anagram indicator, and you've got it.