Pudding about to be brought back for poor scholar (6)
I believe the answer is:
duffer
'poor scholar' is the definition.
(An incompetent or dumb person)
'pudding about to be brought back' is the wordplay.
'pudding' becomes 'duff' (duff is a kind of pudding).
'about to' becomes 're' (I can't explain this - if you can you should believe this answer much more).
'be brought back' says the letters should be written backwards.
're' back-to-front is 'er'.
'duff'+'er'='DUFFER'
'for' is the link.
Can you help me to learn more?
(Other definitions for duffer that I've seen before include "Useless old fellow" , "Clot" , "Fogy" , "rabbit" , "Informally an inefficient person" .)