Beatle is celeb we hear (5)
I believe the answer is:
starr
'beatle' is the definition.
(Ringo Starr)
'celeb we hear' is the wordplay.
'celeb' becomes 'star' (I've seen this before).
'we hear' shows a homophone (sound like).
'star' sounds like 'STARR'.
'is' acts as a link.
(Other definitions for starr that I've seen before include "Ringo --, drummer" , "rush up north" , "Freddie . . . . . Ate My Hamster" , "Beatle Ringo" , "Ringo - (The Beatles)" .)