Sell illegally, as tickets (5)
I believe the answer is:
scalp
'sell illegally as tickets' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for scalp that I've seen before include "Track, way" , "Skin covering top of the head" , "Clasp (anag)" , "Skin with hair as trophy" , "wants to resell theatre tickets" .)