One pound in change for butcher? (8)
I believe the answer is:
mutilate
'butcher?' is the definition.
(I've seen this before)
'one pound in change' is the wordplay.
'one pound' becomes 'Il'.
'in' indicates putting letters inside.
'change' becomes 'mutate' (mutating is a kind of changing).
'il' placed inside 'mutate' is 'MUTILATE'.
'for' is the link.
(Other definitions for mutilate that I've seen before include "Severely damage" , "Damage very seriously" , "Injure severely" , "Maim or disfigure" , "Severely maim" .)