A saver by nature, gentleman shortly arrives at bank (9)

I believe the answer is:

squirrely

'a saver by nature' is the definition.
(like a squirrel, ie building up reserves)

'gentleman shortly arrives at bank' is the wordplay.
'gentleman' becomes 'squire' (I've seen this before).
'shortly' means to remove the last letter.
'arrives at' means one lot of letters go next to another.
'bank' becomes 'rely' (I've seen this before).
'squire' with its final letter taken off is 'squir'.
'squir'+'rely'='SQUIRRELY'

I've seen this clue in The Times.

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