NI town to confirm extra long furlough, finally (5)
I believe the answer is:
omagh
'ni town' is the definition.
(I've seen this before)
'to confirm extra long furlough finally' is the wordplay.
'finally' suggests the final letters.
The final letters of 'to confirm extra long furlough' are 'OMAGH'.
(Other definitions for omagh that I've seen before include "Northern Ireland city" , "somewhere in Northern Ireland" , "N. Irish town, district" , "NI town" , "Ulster town" .)