Looks like the one-time waiver claim has earned himself a spot with the Canadiens for the next few years
Paul Byron has been a solid contributor for the Canadiens this year, particularly on the penalty kill where he excels, and he has done so as a guy claimed off waivers. This has apparently impressed the Habs' brass enough to ink him to a new deal, and he will remain a Canadien for the next three years.
Some may raise an eyebrow, seeing as there are some young players that appear ready to make the jump.