Could the NY Islanders trade for Tyler Toffoli and at what cost?

The Calgary Flames are in a rough situation. Four key players will be free agents after this upcoming season, and three have reportedly said they will not re-sign in Calgary when their contracts expire, with a fourth "leaning towards" not staying. The Flames don't have to trade them, of course, but they might decide it's better to get something for them instead of letting them leave for free, as they did with the Matthew Tkachuk/Jonathan Huberdeau trade.

Could the Islanders find a way to acquire one of them? How much would it cost?

Not to throw another log onto the fire for #Flames, but the potential exodus continues.

I'm told Tyler Toffoli also plans on not re-signing in Calgary.
— Frank Seravalli (@frank_seravalli) June 22, 2023

First, who are we talking about? The three players reportedly not planning to re-sign are Mikael Backlund, Noah Hanifin, and Tyler Toffoli, with Elias Lindholm also leaning towards leaving, according to Daily Faceoff's Frank Seravalli.

I'll look into all of these players as the offseason develops, but for today, I'm focusing on Toffoli.

Let's start with why Toffoli is expected to generate a lot of interest.