The Patriots waived Montgomery on Friday, Mike Reiss of ESPN.com reports.
Montgomery was on the field for six of a possible 57 snaps on offense in Thursday's 21-18 win over the Steelers, Mike Reiss of ESPN.com reports.
Montgomery played three of the Patriots' 64 snaps on offense and carried once for two yards in Sunday's 6-0 loss to the Chargers.
Montgomery (illness) was a full participant at practice Thursday.
Montgomery (knee) missed Thursday's practice, Mark Daniels of MassLive.com reports.
Montgomery (knee) was a limited participant at practice Wednesday.
Montgomery (illness) doesn't have an injury designation for Sunday's game against the Saints, Evan Lazar of the Patriots' official site reports.
Montgomery (illness) was a limited participant at practice Wednesday, Evan Lazar of the Patriots' official site reports.
Montgomery was on the field for three of 74 snaps on offense in Sunday's 24-17 loss to the Dolphins, Mike Reiss of ESPN.com reports.
New England signed Montgomery to its active roster Saturday, Mike Reiss of ESPN.com reports.