Chose new depot (5)
I believe the answer is:
opted
'chose' is the definition.
(to opt for something is to choose it)
'new depot' is the wordplay.
'new' indicates anagramming the letters.
'depot' with letters rearranged gives 'OPTED'.
(Other definitions for opted that I've seen before include "Made choice, selected" , "Selected from depot" , "Chose from depot" , "Decided as in 10 Across" , "Depot (anag.)" .)