What you might say if someone you don't like is going to virtuous religious leader for papers from Charleston (4,8)
I believe the answer is:
good riddance
'what you might say' is the definition.
I don't know anything about this answer so I cannot judge whether this works.
'someone you don't like is going to virtuous religious leader for papers from charleston' is the wordplay.
I cannot really see how this works, but
'someone' could be 'dr' (Dr is an example) and 'dr' is found within the answer.
'leader' could be 'e' (I've seen this in other clues) and 'e' is found within the answer.
'papers' could be 'id' (identification papers) and 'id' is found within the answer.
'virtuous' could be 'good' (associated in meaning) and 'good' is found within the answer.
The remaining letters 'anc' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
'if' acts as a link.
Can you help me to learn more?
(Another definition for good riddance that I've seen is " Removal of undesirable person".)