It's probably not going to happen, but the argument of "whether or not it's worth the risk" is a pretty valid and interesting.
Unfortunately, I couldn’t find a great career AVG WAR chart, but I found something similar.
Marner has averaged 0.93 points per game, which is basically near the Hall of Fame cutline. And obviously, his total production will likely bell curve over the course of his career, so we’re not calling him a HOF player just yet.
But the average 17th pick (first round playoff exit) is about 0.25 PPG
and the average 25th pick (second round playoff exit) is like 0.21 PPG.
So basically, you’re looking at “If we perform as we should, compared to draft as we should, Marner is worth almost exactly four number one picks”
You miss on one of those four picks, and Marner absolutely beats the value of three number one picks; and if you don’t make the playoffs with Marner, then you’re losing the trade.
Long story short, if we had 20 million in cap space, I’d submit an offer sheet on Marner.
I’d be tempted to submit an offer sheet without the cap space solely because we need to move Leddy or Hickey anyway, and even of the Leafs match, you’re sentencing them to Cap Hell where they’d have to make at least one more trade of one of their top players just to be cap compliant, and they’d have a bottom 6 forward/bottom 2 defense of all rookies/ELC/waiver guys because they couldn’t afford anyone better.
You can make the Leafs a top-heavy thin team like the Penguins were this year by “losing” and you gain an elite player at age 22 if you win.
Again, probably not going to happen, but I'd be pulling the trigger on it.
That's what I really don't get about the Canadiens offer sheet: Carolina has tons of cap space, of course they're going to match and it doesn't really do anything negative to them.