Give counsel about five new ideas (6)
I believe the answer is:
advise
'give counsel' is the definition.
(I've seen this in another clue)
'about five new ideas' is the wordplay.
'about' is an insertion indicator.
'five' becomes 'V' (Roman numeral).
'new' indicates anagramming the letters.
'ideas' with letters rearranged gives 'adise'.
'v' put within 'adise' is 'ADVISE'.
(Other definitions for advise that I've seen before include "Give guidance" , "'Counsel, recommend (6)'" , "Counsel, suggest" , "Give counsel" , "Counsel, guide" .)