Cover a new muscular team (5,8)

I believe the answer is:

wigan athletic

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'team' is the definition.
The definition and answer are not the same part of speech.

'cover a new muscular' is the wordplay.
'cover' becomes 'wig' (wig is a kind of cover).
'a' becomes 'an'.
'new muscular' becomes 'athletic' (I've seen this before. I am not sure about the 'new' bit.).
'wig'+'an'+'athletic'='WIGAN ATHLETIC'

Can you help me to learn more?

(Another definition for wigan athletic that I've seen is " Law, cheating it (anag)".)

I've seen this clue in The Daily Express.

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