Policeman at ease coming to grips with issue (7)
I believe the answer is:
emanate
'issue' is the definition.
(both can mean to give out or radiate)
'policeman at ease coming to grips' is the wordplay.
'to grips' says the answer is hidden in the clue (I've seen 'gripping' mean this (the answer is held or gripped within the clue)).
'EMANATE' is hidden within 'policeman at ease coming'.
'with' is the link.
(Other definitions for emanate that I've seen before include "Manatee (anag.)" , "Flow or proceed from" , "Proceed or issue forth" , "Issue forth, from a source" , "spring" .)