He was holding out for a NHL contract since he played so much last year. Problem is, we are so flush on D as is, there's no space. He's likely going back to Switzerland and trying again next year.
Berni is going back to Switzerland to play. He wanted a legit shot at being an NHL guy, and it was clear he wasn't that in Columbus, so he decided not to sign his QO. He got a camp tryout and still couldn't make the team, so off he goes.