Obsessive type showing shiftiest moves (9)

I believe the answer is:

fetishist

I'm a little stuck... Click here to teach me more about this clue!

'obsessive' is the definition.
(I've seen this before)

'type showing shiftiest moves' is the wordplay.
'shiftiest' can be anagrammed to 'FETISHIST'.
But, I'm not sure how the anagram is indicated.

Can you help me to learn more?

(Other definitions for fetishist that I've seen before include "one with unusual tastes" , "Obsessive" .)

I've seen this clue in The Independent.

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