Quoting: LeafsFan4Ever34
Why do you rangers fans all want to trade DeAngelo
The best way I can put it: Tony DeAngelo will never be more than the 3rd most important RHD on the Rangers roster. People will say Nils, people will say the politics, him threatening to fight fans on Twitter, whatever. But the bottom line is this:
The Rangers are too invested in Jacob Trouba with his contract and that he's the only proven good PKD we have, so there's no world in which Tony DeAngelo surpasses him. Like it or not, I think this is just reality. And there's no world in which DeAngelo is better for the Rangers long term than Adam Fox, who is going to need a lot of money as well. So if the Rangers tie down DeAngelo for many years, then they're going to end up with probably 20+m tied up just in RHD (Trouba at 8m, Tony at 5-6m long term, Fox at probably 7m if he bridges and more if they go long term). A third pairing defenseman is not a position you invest big money in, not in the current salary cap era where it barely goes up year to year, not in the current flat cap era, not when you have all of these ELC players that will need money like Chytil, Kakko, Gauthier, Lindgren, etc.
The reason Nils Lundkvist matters in that case is not that he's so good that he makes Tony expendable, but that he's so cheap that even if he's just a third pairing defenseman, that's fine for the Rangers. A Tony DeAngelo trade would, in theory, allow the Rangers to deal from a position of relative strength (having these two RHD ahead of him and another on the way, not really needing a top player and they could get by with some low risk high reward signings at the position) to address a position of relative weakness (ie a middle 6 C, in this case, Gabe Vilardi, ignoring the value).
That's why you see Tony for Hanifin or Tony for Brodin swaps (RHD for a top 4 LHD, potentially a good partner for Trouba) or for Cirelli/Danault/Monahan (2nd line center to protect us in case Chytil can't step up into that spot). And when they trade him for just picks, I don't see that as "realistic" but it still is the same idea; trading a high value asset that we aren't going to want to use or pay that way for other assets.
I think in reality, the only scenarios where Tony is traded are in a hockey deal for a top 4 LHD or 2C, maybe for a 1st round pick. I think the most likely real scenario is that he's signed for a year or two (the Rangers can afford to pay him that way while their ELCs are still in tact) and then moved at the deadline or next offseason when the Rangers feel more comfortable with their replacement options.
tl;dr the Rangers are stacked on the right side and Tony is the obvious odd man out. The Rangers can deal a good player that they don't have the ice time for (without taking their other options off the ice) for something else they could really use, namely a) a premium pick, b) 2C, c) top 4 LHD.