Student wrapped up big fan (5)
I believe the answer is:
lover
'big fan' is the definition.
(I've seen this in another clue)
'student wrapped up' is the wordplay.
'student' becomes 'L' (as in L-plates for learner drivers).
'wrapped up' becomes 'over' (I've seen this in another clue).
'l'+'over'='LOVER'
(Other definitions for lover that I've seen before include "'Lady Chatterley's - - ' by D H Lawrence" , "Devotee" , "One of a couple" , "Paramour" , "admirer" .)