Cardinal clear after withdrawing offer (6)
I believe the answer is:
tender
'offer' is the definition.
(tender can mean to offer something)
'cardinal clear after withdrawing' is the wordplay.
'cardinal' becomes 'red' (cardinal is a shade of red).
'clear' becomes 'net' (as in net profit).
'after' is a charade indicator (letters next to each other).
'withdrawing' says the letters should be written backwards.
'red'+'net'='rednet'
'rednet' reversed gives 'TENDER'.
(Other definitions for tender that I've seen before include "... is the Night/F Scott Fitzgerald" , "facility for steam train" , "Make bid as for contract" , "Bid - not toughened" , "Offer - sensitive to pain" .)