Curse I heard after returning as it happens (4,3)
I believe the answer is:
evil eye
'curse' is the definition.
(I've seen this in another clue)
'i heard after returning as it happens' is the wordplay.
'heard' shows a homophone (sound like).
'after' means one lot of letters go next to another.
'returning' says the letters should be written backwards.
'as it happens' becomes 'live' (as in live broadcasting).
'i' sounds like 'eye'.
'live' backwards is 'evil'.
'eye' after 'evil' is 'EVIL-EYE'.
(Other definitions for evil eye that I've seen before include "Look that can be harmful?" , "Optical sort of ancient curse" , "Look supposed to have the power to harm" , "Indian sign?" , "Stare with the power to harm?" .)