Name fellows with money, having nothing to hide (7)
I believe the answer is:
mention
'name' is the definition.
(I know that name can be written as mention)
'fellows with money having nothing to hide' is the wordplay.
'fellows' becomes 'men' (fellow can mean a man).
'with money' becomes 'tin' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'having' is a charade indicator (letters next to each other).
'nothing' becomes 'o' (looks like zero - 0).
'to hide' is an insertion indicator (some letters hide inside others).
'men'+'tin'='mentin'
'mentin' enclosing 'o' is 'MENTION'.
(Other definitions for mention that I've seen before include "state" , "Briefly refer to (something)" , "Passing reference" , "Allude to" , "Speak of - refer to" .)