Fellow employee to function with different team (8)
I believe the answer is:
workmate
'fellow employee' is the definition.
(I've seen this before)
'function with different team' is the wordplay.
'function' becomes 'work' (synonyms).
'with' means one lot of letters go next to another.
'different' indicates anagramming the letters (letters placed in a different order).
'team' is an anagram of 'mate'.
'work'+'mate'='WORKMATE'
'to' is the link.
(Other definitions for workmate that I've seen before include "Tow maker (anag.)" , "Office colleague" , "Fellow employee" .)