Mikael Granlund would fit that 3rd line so much better than Mittelstadt.

That offer for Boqvist just isn't enough even though Mittelstadt is having a "career year"

With these pieces- I'd keep olofsson, trade mittelstadt plus whatever for granlund. Really rather go another direction than Boqvist, and jvr doesn't do much for me. I don't mind grabbing raanta as an insurance policy, but I suspect comrie is gonna get a chance to claim one of the spots for next year. Seems like the kind of thing the Sabres would do, comrie wasn't great early, got hurt, and was pushed to third by the time he got back.

Preds would probably rather hold onto our center who can kill penalties

This. I'm not opposed to trading Granlund, but this ain't it.