Artist's piece of land in the outskirts of Surrey (6)
I believe the answer is:
sisley
'artist's piece' is the definition.
I don't know anything about this answer so I cannot judge whether it can be defined by this definition.
'land in the outskirts of surrey' is the wordplay.
'land' becomes 'isle' (isle is a kind of land).
'in the' is an insertion indicator.
'outskirts of' says to hollow out the word (remove centre letters) (only letters on the outskirts).
'surrey' with its middle taken out is 'sy'.
'isle' put within 'sy' is 'SISLEY'.
'of' is the link.
Can you help me to learn more?
(Other definitions for sisley that I've seen before include "French Impressionist painter of English descent, d. 1899" , "Impressionist painter of British nationality, d. 1899" .)