Open to view? About time (5)
I believe the answer is:
overt
'open to view?' is the definition.
(I've seen this before)
'about time' is the wordplay.
'about' becomes 'over' (both can mean around).
'time' becomes 't' (abbreviation).
'over'+'t'='OVERT'
(Other definitions for overt that I've seen before include "Done in an obvious way" , "Obvious, patent" , "Openly displayed" , "Voter (anag.)" , "Open to view" .)