Tout good man tucking into boiling tripe (7)
I believe the answer is:
tipster
'tout' is the definition.
(I know that tout can be written as tipster)
'good man tucking into boiling tripe' is the wordplay.
'good man' becomes 'st' (abbreviation for saint).
'tucking into' is an insertion indicator.
'boiling' indicates an anagram.
'tripe' is an anagram of 'tiper'.
'st' put inside 'tiper' is 'TIPSTER'.
(Other definitions for tipster that I've seen before include "Seller of information on racecourse etc" , "Supposed expert on horses" , "Adviser on betting" , "One who sells betting advice" , "Person offering advice" .)