of course we don't have the benefit of hindsight, nor do we have the benefit of foresight.
If this was 4 or 5 years ago I would not hesitate one second to trade EJ or any Bills QB for Drew Breese.
I have stated numerous times, while impressive, leading the league in passing yards guarantees you nothing.
That being said my friend, I will give you the answer you seek -
Today @ $5 Million for 1 season, I would trade Drew for EJ. but I'd very much be kicking myself in the butt if EJ were to prove himself. Then I'd (as GM) look like a tool for doing so.
Today @ $25 Million for 1 season, I would not trade Drew for EJ.