Move, say, right inside in envy (8)
I believe the answer is:
begrudge
'envy' is the definition.
(I know that envy can be written as begrudge)
'move say right inside' is the wordplay.
'move' becomes 'budge' (to budge is to move slightly).
'say' becomes 'eg' (both can mean 'for example').
'right' becomes 'r' (common abbreviation).
'inside' indicates putting letters inside.
'eg'+'r'='egr'
'budge' enclosing 'egr' is 'BEGRUDGE'.
'in' is the link.
(Other definitions for begrudge that I've seen before include "Unwillingly allow" , "Show envy" , "Envy another's possessions or good fortune" , "Be resentful of" , "Envy (someone) the possession of" .)