Sadly admit none put up for post? (9)
I believe the answer is:
nominated
'put up for post?' is the definition.
(as in putting someone up for a job)
'sadly admit none' is the wordplay.
'sadly' indicates anagramming the letters.
'admit'+'none'='admitnone'
'admitnone' anagrammed gives 'NOMINATED'.
(Other definitions for nominated that I've seen before include "Proposed as a candidate" , "Put forward for election" , "mentioned specifically" , "selected" .)