Directions for replacement

I believe the answer is:

new

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'replacement' is the definition.

'directions for' is the wordplay.
'directions' becomes 'ne' (I've seen this in other clues).
'for' becomes 'w' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'ne'+'w'='NEW'

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(Other definitions for new that I've seen before include "Fresh, unused" , "Unfamiliar, restored" , "Unused or novel" , "Seen for the first time" , "Original" .)

I've seen this clue in the Evening Standard.

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