Having the will to analyse final crate (7)
I believe the answer is:
testate
'having the will' is the definition.
(I've seen this before)
'analyse final crate' is the wordplay.
'analyse' becomes 'test' (I've seen this before).
'final crate' becomes 'ate' (I can't justify this - if you can you should give a lot more credence to this answer).
'test'+'ate'='TESTATE'
'to' acts as a link.
Can you help me to learn more?
(Other definitions for testate that I've seen before include "Having made a valid will" , "State of having made a will" , "Leaving a will" , "With a legally valid will" , "Having made a legal will" .)