Frank can punt for Harry (7)

I believe the answer is:

upfront

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'frank' is the definition.
I know nothing about this answer so I can't judge whether it can be defined by this definition.

'punt for harry' is the wordplay.
'harry' is an anagram indicator (harry can mean to attack or spoil).
'punt'+'for'='puntfor'
'puntfor' is an anagram of 'UPFRONT'.

'can' is the link.

Can you help me to learn more?

(Other definitions for upfront that I've seen before include "Direct" , "(Of payment) in advance" , "Bold, frank (colloq.)" , "Honest - paid in advance" , "Open, honest" .)

I've seen this clue in the Sydney Morning Herald.

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