He will either be traded or placed on waivers by 2, according to reports. If he's placed on waivers, we won't know if he is claimed or not until tomorrow, but the expectation is that he will be claimed.
I have no problem with Kreider being upset at the move. These guys have battled together for years and I'm sure they are friends.
I do, however, expect him to get over it and play like a professional. Players come and go. Teams sometimes have to make hard decisions, decisions the players won't like. That's just the reality of sports.