Crossword Genius

Finished? Then I accept the offer (4)

Ross

I believe the answer is:

done

I'm a little stuck... Click here to teach me more about this clue!

'finished?' is the definition.
(both can mean completed)

'i accept the offer' is the wordplay.
I cannot really see how this works, but
'i' could be 'one' (Roman numeral for one) and 'one' is located in the answer.
A single letter 'd' remains which might be clued in a way I don't understand.
This explanation may well be incorrect...

'then' acts as a link.

Can you help me to learn more?

(Other definitions for done that I've seen before include "Performed" , "Complete; finished" , "Thoroughly cooked; accomplished" , "See 23" , "This settled" .)

I've seen this clue in The Globe and Mail.
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