Turkey cut up to go round further (5)
I believe the answer is:
extra
'further' is the definition.
(I've seen this before)
'turkey cut up to go round' is the wordplay.
'turkey' becomes 'tr' (I've seen this in other clues).
'cut' becomes 'axe' (I've seen this before).
'up' is a reversal indicator (in down clue: letters go upwards).
'to go round' is an insertion indicator.
'axe' reversed gives 'exa'.
'tr' put into 'exa' is 'EXTRA'.
(Other definitions for extra that I've seen before include "Minor actor in crowd scenes" , "Taxer (anag.)" , "Something additional or bit player in movie" , "Unnecessary" , "like one of the crowd" .)