Right from nhl.com:
" . LOUIS - The Blues have acquired goaltender Ryan Miller and forward Steve Ott from the Buffalo Sabres in exchange for Jaroslav Halak, Chris Stewart, prospect William Carrier, a first-round draft pick in 2015 and a third-round draft pick in 2016.
Miller and Ott will join the team in Phoenix, where the Blues play Sunday.
Chris Stewart is signed through next season and has fifteen goals this season. Halak on the other hand is a free agent after the season. Interesting Murray didnt wait until the deadline.