Just a thought, I see a ton of people saying Cowan is all but gone from London.
Personally, I think his game has some maturing to be ready for the pro level, but that is a side point from my main argument here of why I think he will be back in London. My main argument is, I just don't see who he will surpass on the roster. The leafs have a bunch of NHL proven talent, that he would have to surpass.
Their current depth chart is something like this;
Marner - Matthew - Knies
Nylander - Tavares - Domi
Robertson - Kampf - Jarnkrok
Reaves - McMann - Dewar
Spares:
Holmberg
Lorentz
Pacioretty (PTO)
That is only current NHL talent as well, the leafs have AHL talent further advanced in development then Cowan as well such as Minten, Voit, Grebyonkin, Hirvonen. Not saying all these guys are better, they are just further into development then Cowan is.
For Cowan's development, if he is in the NHL he needs to be at absolute minimum be playing 3rd line minutes, if you bury him on the 4th line with Reaves. You are just hurting him, when he could be playing 30 minutes a night in London.
Anyway, long story short. I think what is best for his development, is to be back in London dominating and learning from Dale for one more year, because I don't see a clear path to top line minutes in the NHL for him. Look at a guy like Robertson, he put up 55 in the O and has struggled to find ice time in Toronto, which hasn't been good for his development.