‘Nilsson made $1 million last season and had accepted St. Louis’ qualifying offer but became expendable when the Blues signed Nashville’s Carter Hutton Friday on the opening day of free agency to back up Jake Allen. Nilsson will ostensibly battle Linus Ullmark for the right to play behind Lehner or be the No. 1 goaltender in Rochester. The Sabres lost Chad Johnson to free agency Friday, when he signed a one-year deal with Calgary, and Murray was aggravated when former Pittsburgh netminder Jeff Zatkoff reneged on an agreed-upon deal and then signed with Los Angeles.’