Contract analyst (6)
I believe the answer is:
shrink
This clue is a double definition.
'contract' is the first definition.
(I know that contract can be written as shrink)
'analyst' is the second definition.
(I've seen this in another clue)
(Other definitions for shrink that I've seen before include "Get smaller - psychiatrist" , "Grow smaller like slang psychiatrist" , "Contract, reduce" , "Reduce in size" , "Decrease - therapist" .)