Crossword Genius

Has he no sense of duty? (4,6)

Ross

I believe the answer is:

free trader

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

'sense of duty?' is the definition.
Both the answer and definition are singular nouns.
Maybe they are linked in a way I don't understand?

'has he no' is the wordplay.
I cannot quite see how this works, but
'he' could be 'free' and 'free' is present in the answer.
The remaining letters 'trader' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for free trader that I've seen before include "Bright" , "as one whose views are of unrestricted general import" , "Duty-dodger" .)

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