Dealer, one in tears about publisher? (8)
I believe the answer is:
croupier
'dealer' is the definition.
(similar to a dealer in a casino)
'one in tears about publisher?' is the wordplay.
'one in tears' becomes 'crier' (I've seen this before).
'about' is an insertion indicator.
'publisher?' becomes 'OUP' (abbreviation for Oxford University Press).
'crier' going around 'oup' is 'CROUPIER'.
(Other definitions for croupier that I've seen before include "Casino attendant" , "rakes in the money" , "Roulette attendant" , "Person in charge of a gaming table" , "Worker raking it in at the casino!" .)