Young Hawkins is in the gym, we're told (3)

I believe the answer is:

jim

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'young hawkins' is the definition.
The definition suggests a singular noun which matches the answer.

'the gym we're told' is the wordplay.
'we're told' shows a homophone (sound like).
'gym' is a homophone of 'JIM'.

'is in' is the link.

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I've seen this clue in the Evening Standard.

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