Money for a cob, say (5)
I believe the answer is:
bread
I believe this clue is a double definition.
'money' is the first definition.
(slang term for money)
'a cob say' is the second definition.
(I know that bread roll is a type of bread)
'for' acts as a link.
(Other definitions for bread that I've seen before include "Loaves" , "''Eaten . . . . . is soon forgotte''" , "Staple food" , "Eg, loaf or rolls" , "brass" .)