Anonymous report about duke getting kitted out (9)
I believe the answer is:
accoutred
'kitted out' is the definition.
(accoutre means to clothe or equip)
'anonymous report about duke' is the wordplay.
I cannot really see how this works, but
'about' could be 're' (common abbreviation for 'with reference to') and 're' is found in the answer.
'duke' could be 'd' and 'd' is found within the answer.
This may be the basis of clue (or it may be nonsense).
'getting' acts as a link.
(Other definitions for accoutred that I've seen before include "in dress" , "Given requisite kit" , "Suitably equipped" , "dressed" .)