Turkey, cutting unusual duties, must get whatever remains (8)
I believe the answer is:
detritus
'remains' is the definition.
(I've seen this before)
'turkey cutting unusual duties' is the wordplay.
'turkey' becomes 'tr' (abbreviation eg in internet addresses).
'cutting' indicates putting letters inside (some letters cut their way into a word).
'unusual' is an anagram indicator.
'duties' is an anagram of 'deitus'.
'tr' going within 'deitus' is 'DETRITUS'.
'must get whatever' is the link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for detritus that I've seen before include "Accumulation of debris - it rusted (anag)" , "waste material" , "Left over bits and pieces" , "Waste matter" , "Accumulated debris" .)