Try to agree in international game (4,5)
I believe the answer is:
test match
'international game' is the definition.
(I've seen this before)
'try to agree' is the wordplay.
'try' becomes 'test' (test is a kind of try).
'to agree' becomes 'match' (synonyms).
'test'+'match'='TEST MATCH'
'in' is the link.
(Other definitions for test match that I've seen before include "Sort of game" , "International affair" , "sporting event" , "14 [NATIONAL] team meeting" , "International fixture" .)