Best replacement name, right? (5)
I believe the answer is:
starr
'best replacement' is the definition.
(I've seen this in another clue)
'name right?' is the wordplay.
'name' becomes 'star' ().
'right?' becomes 'r' (common abbreviation).
'star'+'r'='STARR'
(Other definitions for starr that I've seen before include "Ringo - (The Beatles)" , "Ringo --, drummer" , "Beatle Ringo" , "rush up north" , "Freddie . . . . . Ate My Hamster" .)