Belong to painter perhaps (7)
I believe the answer is:
pertain
'belong' is the definition.
(I know that pertain is a kind of belong)
'painter perhaps' is the wordplay.
'perhaps' is an anagram indicator.
'painter' with letters rearranged gives 'PERTAIN'.
'to' acts as a link.
(Other definitions for pertain that I've seen before include "Relate (to), apply (to)" , "Painter inclined to be relevant" , "Painter (anag) - relate (to)" , "Be related or applicable (to something)" , "Have relevance" .)