Statesmen revamped determination for grant application (5,4)
I believe the answer is:
means test
'determination for grant application' is the definition.
'statesmen revamped' is the wordplay.
'revamped' is an anagram indicator.
'statesmen' with letters rearranged gives 'MEANS TEST'.
(Other definitions for means test that I've seen before include "Inquiry into the financial state of a person applying for aid" , "used to give the benefit" , "enquiry into funding" , "examination of available funds" , "Inquiry into financial position before providing aid" .)