Leaving group will get compensation (6)
I believe the answer is:
offset
'compensation' is the definition.
(offset is a kind of compensation)
'leaving group' is the wordplay.
'leaving' becomes 'off' (I've seen this in other clues).
'group' becomes 'set' (set is a kind of group).
'off'+'set'='OFFSET'
'will get' acts as a link.
(Other definitions for offset that I've seen before include "Amount by which a thing is out of line" , "Type of printing of efts" , "Place out of line" , "Compensation; printing technique" , "Compensate for - printing method" .)