Mikhail Grigorenko has signed a one-year contract with the Colorado Avalanche.
The 21-year-old centre was acquired from the Buffalo Sabres on June 26 as part of the return for centre Ryan O'Reilly.
In 25 games with the Sabres in 2014-15, he scored three goals and three assists. He has appeared in 68 career games with the Sabres over parts of three seasons, scoring six goals and eight assists.
Buffalo originally selected the six-foot-three Russian 12th overall at the 2012 NHL Entry Draft.