Sticking to fan (8)
I believe the answer is:
adherent
I believe this clue is a double definition.
'sticking' is the first definition.
(I've seen this before)
'to fan' is the second definition.
(I've seen this before)
(Other definitions for adherent that I've seen before include "Supporter, fan" , "One believes in and helps spread the doctrine of another" , "Person supporting" , "Loyal follower, one who sticks" , "Dedicated supporter" .)