How can the Sens clear enough cap to sign Rantanen? That's what I want to know!
I know your post is a bit tongue in cheek, because we all know that he is never signing here. There are ways to clear cap if he would sign here, but it would decimate our depth.
If we go after Rantanen, the only way I could see it making sense is if we make a Kawhi Leonard type trade. As in, we call up Colorado tomorrow and propose that since they cannot afford to extend Rantanen, and they aren't going to trade him while trying to win, we give them Batherson for Rantanen with retained salary. The end result is that it is cap in/cap out this year, and while no one in their right mind would trade Rantanen for Batherson, 1 year of Rantanen for 3 years of Batherson (with 2 of those years being well below market value) might make sense.
For Ottawa, it would be a move where they know Tkachuk is gone if they miss the playoffs, so they give up a cost controlled fan favourite in Batherson for 1 year of Rantanen, who is a major upgrade. If they are well out of the playoffs at the deadline, they can flip him for a 1st++.