Withdraw what was said about region (7)
I believe the answer is:
retract
'withdraw' is the definition.
(I've seen this before)
'about region' is the wordplay.
'about' becomes 're' ('re' means regarding or about).
'region' becomes 'tract' (both can mean a large piece of land).
're'+'tract'='RETRACT'
'what was said' is the link.
This may not be correct. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for retract that I've seen before include "Sheathe" , "Take back what was said" , "Abjure" , "Take back (statement)" , "Pull back (statements or claws, perhaps)" .)