Old one with retirement allowance leaves northern Mumbai suburb for first game (6)
I believe the answer is:
opener
But I can't explain it at all! Could you help me understand?
(Other definitions for opener that I've seen before include "A key or a bottle top remover" , "First act" , "First batsman in game" , "No.1 or No.2 bat" , "man, first at the crease?" .)