Times editor’s outside in rubber (6)
I believe the answer is:
eraser
'rubber' is the definition.
(rubber can mean an eraser)
'times editor's outside' is the wordplay.
'times' becomes 'eras' (an era is a time or period).
'outside' says to hollow out the word (remove centre letters).
'editor' with its centre taken out is 'er'.
'eras'+'er'='ERASER'
'in' is the link.
(Other definitions for eraser that I've seen before include "It could remove" , "Stationery item" , "Item used for rubbing out" , "An Indian rubber" , "correction device" .)