Peaky Blinders movie needs to answer these questions after finale

Cillian Murphy bowed out as Tommy Shelby, albeit temporarily, in the Peaky Blinders season 6 finale, but where will the franchise go next? Spoilers within.
Who was the Grey Man? What did Tommy whisper to Duke? What happened with Finn?!

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Peaky Blinders fans are all asking the same question after the season finale

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