Bank staff after wealth could be those in futures (7-7)

I believe the answer is:

fortune-tellers

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'be those in futures' is the definition.
I can't judge whether this definition defines the answer.

'bank staff after wealth' is the wordplay.
'bank staff' becomes 'tellers' (I've seen this in another clue).
'after' means one lot of letters go next to another.
'wealth' becomes 'fortune' (fortune is a kind of wealth).
'tellers' put after 'fortune' is 'FORTUNE-TELLERS'.

'could' acts as a link.

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I've seen this clue in The Sunday Times.

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