I'd return rolls to get butter in (8)
I believe the answer is:
intruder
'butter in' is the definition.
(I've seen this before)
'i'd return rolls' is the wordplay.
'rolls' is an anagram indicator.
'id'+'return'='idreturn'
'idreturn' anagrammed gives 'INTRUDER'.
'to get' acts as a link.
(Other definitions for intruder that I've seen before include "Unwanted visitor" , "Trespasser" , "Uninvited person like burglar" , "Uninvited guest" , "Person who comes in being neither invited nor wanted" .)