You've got 40M tied up in 4 forwards.
3 of them can play center (maybe even 4).
Tavares has an NMC. He's not going anywhere.
So now it's down to Matthews, Marner, Nylander.
Nylander doesn't save you much cap space.
So now, Matthews and Marner.
Which guy do you think brings back the huge return?
Matthews brings back a better return, sure, but good luck selling that trade to your fanbase of dealing your #1OA pick who has been nothing but your best player since you took him. And also, Matthews was quite possibly the only player in that CBJ series who wasn’t an embarrassment of soft hockey. He was the best player on the ice most nights.
That said also, I think Marner might actually return something close. Both are signed long term, with Marner having an extra year at about a million less per year. Both are in the stratosphere where you would get a huge return if they were available.
I think even though Matthews undeniably would pull more assets in a trade, his value to Toronto over Marner’s overshadows the difference in what the respective returns would be.
Trading Marner probably puts you in the top pairing D range in a pure hockey trade but more likely multiple firsts and a prospect or two as you are trading them to save cap, not get equal talent. Matthews adds what to that trade over Marner? Another first maybe?