Irish province has church for new city (9)
I believe the answer is:
leicester
'new city' is the definition.
'leicester' can be an answer for 'city' (Leicester is an example). I'm not certain of the 'new' bit.
'irish province has church' is the wordplay.
'irish province' becomes 'leister' (I can't explain this - if you can you should believe this answer much more).
'has' means one lot of letters goes inside another.
'church' becomes 'ce' (Church of England).
'leister' placed around 'ce' is 'LEICESTER'.
'for' is the link.
Can you help me to learn more?
(Other definitions for leicester that I've seen before include "County town on the river Soar" , "Central English city; red cheese" , "Midland city" , "Queen's favourite" , "City; orange cheese" .)