Would he say absolutely anything for a cuppa? (7)
I believe the answer is:
charlie
'would he say absolutely anything' is the definition.
The definition suggests a singular noun which matches the answer.
'cuppa?' is the wordplay.
I cannot quite see how this works, but
'cuppa?' could be 'cha' and 'cha' is found within the answer.
This explanation may well be incorrect...
'for a' acts as a link.
Can you help me to learn more?
(Other definitions for charlie that I've seen before include "Fool - drug (slang)" , "Silly person" , "Code word for letter C" , "Fool; man's name" , "succeeds. Bravo!" .)