Mean sub: Connacht’s right wing he hit (5,3,4)
I believe the answer is:
below the belt
'hit' is the definition.
(I know that below the belt is a type of hit)
'mean sub connacht's right wing he' is the wordplay.
I cannot really understand how this works, but
'mean' could be 'low' (I've seen this before) and 'low' is located in the answer.
'wing' could be 'l' and 'l' is present in the answer.
'he' could be 'ethe' and 'ethe' is located in the leftover letters.
This may be the basis of the clue (or it may be nonsense).
(Other definitions for below the belt that I've seen before include "Not fair" , "Underhand, unfair" , "Trouser pockets are" , "fly is here" , "Illegal" .)