VAR's conclusion irritates team (7)
I believe the answer is:
rangers
'team' is the definition.
(Rangers F.C.)
'var's conclusion irritates' is the wordplay.
'conclusion' suggests the final letters.
'irritates' becomes 'angers' (I've seen this before).
The final letter of 'var' is 'r'.
'r'+'angers'='RANGERS'
(Other definitions for rangers that I've seen before include "footballers" , "Long-distance travellers" , "Forest staff" , "Rovers (or > Wanderers?)" , "Glasgow football club" .)