Some knew Manhattan film star (6)

I believe the answer is:

newman

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'star' is the definition.
Both the answer and definition are singular nouns.
Perhaps they are linked in a way I don't understand?

'some knew manhattan film' is the wordplay.
'some' indicates a hidden word (some of the parts of the word are used).
'NEWMAN' is hidden in the letters of 'knew manhattan film'.

Can you help me to learn more?

(Other definitions for newman that I've seen before include "Paul -, US actor" , "John Henry --, beatified English cardinal" , "John Henry ---, C19 cardinal" , "Paul . . . . . ., deceased US film star" , "'John Henry ..., founder of what is now UCD (6)'" .)

I've seen this clue in The Sun.

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