Specialist transforming clan ethic (9)
I believe the answer is:
technical
'specialist' is the definition.
(I've seen this before)
'transforming clan ethic' is the wordplay.
'transforming' indicates anagramming the letters (I've seen this in other clues).
'clan'+'ethic'='clanethic'
'clanethic' is an anagram of 'TECHNICAL'.
(Other definitions for technical that I've seen before include "Requiring specialist knowledge" , "drawing > fault > college > found after applying rules strictly" , "requires special skill" , "Industrial" , "Concerned with applied sciences" .)