Something to depress Everton fans by English port? (3,4)
I believe the answer is:
red wine
'port?' is the definition.
(port is a type of red wine)
I don't understand the rest of the clue.
(Other definitions for red wine that I've seen before include "Tent, say" , "Merlot or Malbec, say" , "Vin rouge, like claret" , "Such as Shiraz or Merlot" , "Eg, claret" .)