The English punt and scrap in seven-a-side game (9)
I believe the answer is:
quidditch
'seven-a-side game' is the definition.
(sport in the Harry Potter books)
'the english punt and scrap' is the wordplay.
'the english punt' becomes 'quid' (slang for pound, equivalent to Irish coin the punt).
'and' says to put letters next to each other.
'scrap' becomes 'ditch' (I've seen this before).
'quid'+'ditch'='QUIDDITCH'
'in' is the link.
(Other definitions for quidditch that I've seen before include "Harry Potter aerial game" , "Harry Potter's game" .)