Bear's new role in gallery (8)
I believe the answer is:
tolerate
'bear's' is the definition.
(I've seen this before)
'new role in gallery' is the wordplay.
'new' is an anagram indicator.
'in' means one lot of letters goes inside another.
'gallery' becomes 'tate' (I've seen this before).
'role' anagrammed gives 'oler'.
'oler' put inside 'tate' is 'TOLERATE'.
(Other definitions for tolerate that I've seen before include "Family relative" , "Stand" , "Put up with, bear" , "Endure with forbearance" , "Withstand" .)