Keeper was placed on the waiver wire Saturday.
Keeper signed a one-year, two-way contract with Montreal on Saturday.
Keeper was waived by the Canucks on Tuesday.
Keeper (leg) practiced Thursday, Jeff Paterson of TSN 1040 Vancouver reports.
Keeper (leg) was moved to long-term injured reserve Monday, Thomas Drance of The Athletic Vancouver reports.
Keeper, as suspected, suffered a broken leg in training camp and will be out indefinitely, Ben Kuzma of The Vancouver Province reports.
Keeper was taken off the ice on a stretcher Saturday during training camp after suffering a leg injury, Jeff Paterson of TSN 1040 Vancouver reports.
Keeper was promoted to the active roster Tuesday, per CapFriendly.
Keeper was brought up from AHL Syracuse to the taxi squad Wednesday.
Keeper was assigned to AHL Syracuse on Saturday.