Couple of points...
He's 23, why exactly is Chicago trading him? Heck, even if you get a 1st (that's likely going to be 20+) + top prospect, both of those would have to "hit" to get a player the quality of Hagel.
From Toronto's perspective, his contract is obviously exciting, but I struggle a little bit to see the fit. I'm not sure how much "better than" Michael Bunting, Alex Kerfoot, or Ilya Mikheyev he really is; and it's not like he brings a bunch of size / physicality either.
Don't get me wrong, there should be interest.... but if the price is say, Robertson + the first, does that really make sense? I think if parting with those types of pieces, you need to fill a bigger hole than Hagel does.... maybe Dubas looks at it as "he's the perfect Kerfoot replacement", and hopes to recoup futures on Kerfoot in the offseason.
Personally, if dealing with Chicago, I'd like to see a real blockbuster. Something like:
- Robertson or Amirov
- Toronto's 1st
- Liljegren (or ideally Dermott)
- Toronto 2nd 2023
For:
-Brandon Hagel
-Connor Murphy
Get a theoretical Jake Muzzin replacement, but being on the right side, somebody that could be a solid partner for a Rasmus Sandin as well.
If you figure that next year, Murphy replaces Muzzin and Hagel replaces Kerfoot, that's a lot of cap space for Jack Campbell. Obviously this kind of deal only works if Muzzin is out for the remainder of the regular season, but with multiple concussions in a short period of time, it seems likely the Leafs could make that happen. Would give them a REALLY good blueline in the playoffs.