Literally throws away tray from French city (5)

I believe the answer is:

lille

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'french city' is the definition.
(I've seen this before)

I can't explain the rest of the clue.

(Other definitions for lille that I've seen before include "City of N. France" , "Eurostar stop" , "[FRANCOPHOBIA] would prevent you appreciating it" , "City in northern France, Flanders" , "University city in French Flanders" .)

I've seen this clue in the Irish Times and the Irish Times (Crosaire).

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