Cattle Mike flogged for financial security (4,6)
I believe the answer is:
meal ticket
'financial security' is the definition.
'cattle mike flogged' is the wordplay.
'flogged' indicates anagramming the letters.
'cattle'+'mike'='cattlemike'
'cattlemike' with letters rearranged gives 'MEAL TICKET'.
'for' acts as a link.
(Other definitions for meal ticket that I've seen before include "sought by gold-digger?" , "Luncheon voucher" , "It provides food" .)