Daily story for credulous chap (7)
I believe the answer is:
charlie
'credulous chap' is the definition.
(charlie can mean a gullible person)
'daily story' is the wordplay.
'daily' becomes 'char' (both can mean a cleaner).
'story' becomes 'lie' (story can mean a fabrication).
'char'+'lie'='CHARLIE'
'for' is the link.
(Other definitions for charlie that I've seen before include "tail-ender" , "Code word for letter C" , "Fool - drug (slang)" , "succeeds. Bravo!" , "Chaplinesque man" .)