Regard for the diocese (3)
I believe the answer is:
see
I believe this clue is a double definition.
'regard' is the first definition.
(synonyms)
'diocese' is the second definition.
(I've seen this before)
'for the' acts as a link.
(Other definitions for see that I've seen before include "Rome, notably" , "Perceive, watch" , "Perceive mentally" , "Discern visually" , "Perceive; meet (someone)" .)