How shrewd of him to have extra youth! (4,3)

I believe the answer is:

wide boy

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'how shrewd of him to' is the definition.
I don't know anything about this answer so I cannot tell whether this works.

'extra youth' is the wordplay.
'extra' becomes 'wide' (cricket term).
'youth' becomes 'boy' (I've seen this in other clues).
'wide'+'boy'='WIDE-BOY'

'have' is the link.

Can you help me to learn more?

(Other definitions for wide boy that I've seen before include "Spiv" , "petty young criminal" , "Tweedledum, for instance" , "A rather unscrupulous person" .)

I've seen this clue in the Evening Standard.

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