Won't he do the wrapping precisely? (2,3,3)
I believe the answer is:
on the dot
'precisely?' is the definition.
('on the dot' can be a synonym of 'precisely')
'won't he do the wrapping' is the wordplay.
'wrapping' says the answer is hidden in the clue.
'ON THE DOT' is hidden in the letters of 'wont he do the'.
(Other definitions for on the dot that I've seen before include "Promptly" , "At exactly the right time" , "Absolutely punctual" , "At precisely the right time" , "on precise place in line?" .)