Occupant let team inside (8)
I believe the answer is:
resident
'occupant' is the definition.
('resident' can be a synonym of 'occupant')
'let team inside' is the wordplay.
'let' becomes 'rent' (I've seen this before).
'team' becomes 'side' (I've seen this before).
'inside' is an insertion indicator.
'rent' placed around 'side' is 'RESIDENT'.
(Other definitions for resident that I've seen before include "one in the house?" , "Someone with a home" , "Occupant's" , "One living somewhere" , "Permanent dweller" .)