Flora’s partner heads for football arena up north, actually (5)
I believe the answer is:
fauna
'flora's partner' is the definition.
(I've seen this in another clue)
'heads for football arena up north actually' is the wordplay.
'heads for' suggests taking the first letters.
The first letters of 'football arena up north actually' is 'FAUNA'.
(Other definitions for fauna that I've seen before include "list of animal life" , "Animal life of an area" , "Flora and - -" , "Animal kingdom" , "list of animals" .)