A cross in the middle (6)

I believe the answer is:

centre

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'the middle' is the definition.
('centre' can be a synonym of 'middle')

I can't explain the remainder of the clue.

(Other definitions for centre that I've seen before include "Player" , "focus" , "- forward; - punch" , "Exact middle point" , "The point equidistant from everything" .)

I've seen this clue in the Evening Standard.

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