League winner doesn't see a future with the Republic (8)
I believe the answer is:
unionist
'a future with the republic' is the definition.
I can't tell whether this defines the answer.
'league winner doesn't' is the wordplay.
'league' becomes 'union' (I've seen this before).
'winner doesn't' becomes 'ist' (I am not sure about this - if you are sure you should believe this answer much more).
'union'+'ist'='UNIONIST'
'see' is the link.
Can you help me to learn more?
(Other definitions for unionist that I've seen before include "not Republican" , "Alliance member" , "Politician" , "TU member" , "Person supporting the political links between Great Britain and Northern Ireland" .)