Drab sort of minstrel (4)
I believe the answer is:
bard
'minstrel' is the definition.
(I've seen this in another clue)
'drab sort' is the wordplay.
'sort' indicates anagramming the letters.
'drab' with letters rearranged gives 'BARD'.
'of' acts as a link.
(Other definitions for bard that I've seen before include "Traditional poet" , "A drab sort of old poet" , "Epic poet" , "Animal; cruel person" , "Shakespeare" .)