To say patience is wearing thin for both of these two is an understatement. I'm not sure either will be back with their respective team next season. I would have to say if either stays it would have to be Holtmann, as maybe his history buys him one more year to turn things around and make a solid run at the NCAA tournament.
As for Larsen, I'm not 100% sure why the Blue Jackets haven't fired him already. They brought in Gaudreau and overpaid for a defenseman and the team is worse than they were last year. His offense isn't scoring and his defense is non existent.