He's still one of the youngest players in the league and could be argued has been as equally disappointing as James Young. Heck, their numbers are even similar.
However, there is value in trading for him considering that he's just a bigger person and better athlete than James. Rather than drafting a younger forward project, why not just trade for a 20 year old with a gazelle stride and a 7'7 wingspan?
Sure he could be a bust, but is really that much risk?
Also, depending on Derozan's FA decision, it could be time for Toronto to hit the reset button and enter the "asset gathering" phase. Considering that Kyle Lowry is no spring chicken himself, could Toronto enter a tanking rebuild?