Divine messenger seen in Michelangelo (5)
I believe the answer is:
angel
'divine messenger' is the definition.
(I've seen this before)
'in michelangelo' is the wordplay.
'in' indicates a hidden word.
'ANGEL' is hidden in the letters of 'michelangelo'.
'seen' acts as a link.
(Other definitions for angel that I've seen before include "Divine messenger" , "Heavenly body" , "backer for rep" , "darling!" , "Heavenly being - 21 (anag)" .)