Surrounded by team on green to some extent (5)
I believe the answer is:
among
'surrounded by' is the definition.
(I've seen this before)
'team on green to some extent' is the wordplay.
'to some extent' indicates a hidden word.
'AMONG' is hidden within 'team on green'.
(Other definitions for among that I've seen before include "Amidst" , "In the middle of, say a crowd" , "Go man! (anag.)" , "In an assembly of" , "when in company" .)