A Reading fan? (8)
I believe the answer is:
bookworm
'a reading fan?' is the definition.
The answer and definition can be both people as well as being singular nouns.
Maybe they are linked in a way I don't understand?
This is the entire clue.
(Other definitions for bookworm that I've seen before include "Constant reader, like garden invertebrate" , "Excessive reader - type of louse" , "One keen on reading" , "Person excessively fond of reading, like earth creature" , "An avid reader or a kind of grub" .)