Thought permission renewed (10)
I believe the answer is:
impression
'thought' is the definition.
(I know that impression is a type of thought)
'permission renewed' is the wordplay.
'renewed' indicates anagramming the letters.
'permission' is an anagram of 'IMPRESSION'.
(Other definitions for impression that I've seen before include "opinion" , "Mark" , "Imitation (of a person)" , "take-off" , "Feeling; print" .)