Allard was returned to AHL Laval on Friday, RDS.ca reports.
Allard was brought up from the minors Tuesday under emergency conditions.
Allard was loaned to AHL Laval on Monday.
Allard had two shots on goal over 11:31 of ice time in Sunday's 4-3 loss to Vegas.
Montreal acquired Allard from Los Angeles on Friday in exchange for forward Nate Schnarr.
Allard was loaned to AHL Ontario on Monday.
Allard will be recalled from AHL Ontario on Sunday, John Hoven of SiriusXM NHL Network Radio reports.
Allard was waived by the Kings on Sunday, CapFriendly reports.
Allard signed a one-year, two-way contract extension with the Kings on Friday.
Allard was placed on waivers by Nashville on Monday, Adam Vingan of The Athletic reports.