Gentleman at expecting to take issue (7)
I believe the answer is:
emanate
'issue' is the definition.
(both can mean to give out or radiate)
'gentleman at expecting to take' is the wordplay.
'to take' says the answer is hidden in the clue (I've seen 'taking' mean this (the answer is carried or taken by the clue)).
'EMANATE' is hidden within 'gentleman at expecting'.
(Other definitions for emanate that I've seen before include "Manatee (anag.)" , "Issue or spread out from a source" , "Proceed or issue forth" , "Issue or originate from manatee" , "spring" .)