Crossword Genius

Keen on dope, with time for France (4)

Ross

I believe the answer is:

into

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'keen on' is the definition.
(I've seen this before)

I can't explain the rest of the clue.

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(Other definitions for into that I've seen before include "To a position inside" , "digging" , "Keen on, colloquially" , "Keenly interested in" , "Expression of division" .)

I've seen this clue in The Telegraph.
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