A student's destiny to get grant (5)
I believe the answer is:
allot
'grant' is the definition.
('allot' can be a synonym of 'grant')
'a student's destiny' is the wordplay.
'student' becomes 'l' (as in L-plates for learner drivers).
'destiny' becomes 'lot' (I've seen this before).
'a'+'l'+'lot'='ALLOT'
'to get' acts as a link.
(Other definitions for allot that I've seen before include "appropriate" , "Dish out" , "Allocate" , "Distribute in portions" , "Apportion (something to someone)" .)