This.
Koivu isn't going anywhere. He has a full no movement clause.
What I do know though is that Minnesota felt so unsure of their center ice this year that they traded for Hanzal at the deadline. I think their interest in a center is driven by a) Koivu's age and b) the ability of Staal and Granlund to swing out on the wing. They also understand that Stepan is a hometown guy who will be around for several years.
The Wild have all sorts of protection problems but I could see a forward + defenseman to the Rangers as plausible. Or perhaps a defenseman now (that the Rangers can suddenly protect) for a player to be named after the expansion draft.
I also know the Wild have some nice upcoming prospects that are probably ready to play in the NHL. That could also work.
I've long had the Wild (along with the Coyotes and the Golden Knights) as the three most logical landing places IF Stepan is traded.