Quoting: Colton_Bernard
Dude it’s hypothetical if Marner waives his No Trade Clause and signs and extension then that is exactly what he is worth. He is one of the best wingers in the game, just because he is having a rough playoffs isn’t going to hurt his value.
He can be one of the best wingers in the game and still have a rough playoffs that hurts his value.
I think the biggest thing is the NMC, that's not something players waive carte blanche. The SDP told a story about the Kaberle trade, where he had a full NTC. Burke told his agent he wanted to trade Kaberle, his agent told him to f*** off, and Burke told him "I didn't sign him to that deal, he'll sit in the pressbox until he waives".
Kaberle gave him a list of Boston...and that's it. If you hand out a NMC/NTC, you're telling the player they get to dictate exactly where they go. That's exactly why Tarasenko went for so little at the TDL. That's exactly what Marner will do.
Now that said, he's still going to fetch a nice return (1st, good prospect, and maybe more if he agrees to an extension too), but 1) that team absolutely isn't going to be Columbus, and 2) that prospect isn't going to be Jiricek-caliber, let alone Jiricek + Voronkov caliber.