Send back that timer! (5)

I believe the answer is:

remit

'send' is the definition.
(thesaurus)

'back that timer' is the wordplay.
'back' shows that the letters should be reversed in order.
'that timer' becomes 'timer'.
'timer' reversed gives 'REMIT'.

(Other definitions for remit that I've seen before include "Maybe suspend" , "Send; abate; cancel" , "The - Papers (M. Amis)" , "Transfer (money)" , "Send payment for timer" .)

I've seen this clue in the Evening Standard.

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