In response to those putting forward the argument that, if the other GMs feel his market value is what the Leafs are offering, than no one is going to pay him what he wants anyway.
There is a difference between what a team that currently already has the player is willing to pay within their cap structure, with what a team who doesn't have said player, needs a player like them and can otherwise not acquire one.
What the Canes or another team really wanting Nylander would pay him to get him is guaranteed higher than if they already owned his rights and were negotiating, especially if they had the depth up front and pending contracts coming up the Leafs do. How many 22 year old players off their ELC like Nylander (who can play C or W) become available?
In addition, it is to the advantage of the GMs in the league to anonymously support Toronto's position, because one less Draisatl or Eichel type contract helps keep others down.