Koivu has definite value as a defensively trustworthy bottom six C with FO, and other, skills. Until you see him play in person you don't realize what a presence he is on the ice, even if he isn't scoring. He is a big body, and he knows how to use it effectively.
I'm hoping that the Wild bring him back for one more year( at a reasonable rate), and that they buy out Rask, letting Sturm( or whomever) get some ice time at C. Mikko would be a kick ass #4C, and a decent #3C.
Rask is nowhere near the player that Mikko is. Never has been, and never will be.
All this might change if we acquire another C in trade or FA, but I can't think of who that would be. AT this point we are down to hoping that JEE improves, Staal maintains, and that someone like Khovanov can be a top 6 C in a year or three. Pretty slim pickings. We need to get someone like Lundell this year in the draft.