The 29-year-old German had three goals and one assist in 17 games with Buffalo before suffering a knee injury Feb. 23.
Buffalo acquired the 6-foot-1 Sulzer at the 2012 trade deadline, when they shipped right wing Zack Kassian and defenseman Marc-Andre Gragnani to the Canucks for center Cody Hodgson and Sulzer.
The Sabres also signed defenseman Drew Bagnall to a two-way contract.
OILERS: Re-signed gritty forward Ryan Jones to a one-year contract.
The 29-year-old Jones has 52 goals, 42 assists and 141 penalty minutes in 282 regular-season games with Edmonton and the Nashville Predators.
Drafted in the fourth round of the 2004 draft by Minnesota, Jones’ best season came in 2011-12 with Edmonton, when he had 17 goals and 16 assists.
The Chatham, Ont., native was slowed by an injury during the lockout-shortened season and played in just 27 games.
CANADIENS: Signed free agent forward Stefan Fournier to a three-year contract.
Fournier had 35 goals and 72 points for Memorial Cup-champion Halifax this past season. He added 16 goals and 13 assists in 17 playoff games.
The 6-foot-3, 212-pounder from Dorval, Que., also led Halifax with 100 penalty minutes in the regular season and maintained a +17 plus/minus differential.
He is currently taking part in his first Canadiens’ development camp.