Engineer amazing conclusion to game for Arsenal (8)
I believe the answer is:
magazine
'arsenal' is the definition.
(I've seen this before)
'engineer amazing conclusion to game' is the wordplay.
'engineer' indicates an anagram.
'conclusion to' suggests the final letters.
The final letter of 'game' is 'e'.
'amazing' with letters rearranged gives 'magazin'.
'magazin'+'e'='MAGAZINE'
'for' is the link.
(Other definitions for magazine that I've seen before include "Arsenal" , "Journal, periodical" , "Section of a firearm" , "Read it or keep munitions in it" , "Slug container" .)