They also signed safety Robert Lester from the practice squad to the 53-man roster.
Starting left tackle Byron Bell (knee) and right tackle Nate Chandler (groin) were on Monday’s injury list as the Panthers prepare for Thursday night’s game against New Orleans. Both had to leave Sunday’s 13-9 loss to Seattle, forcing undrafted rookie David Foucault to play 30 snaps.
Chandler said he will be ready for the Saints. Bell’s status remains unclear.
Remmers, 6-5 and 300 pounds, entered the NFL in 2012 as an undrafted free agent from Oregon. He has spent time on the practice squads of Tampa Bay, Minnesota and St. Louis, as well as the active rosters of San Diego and Minnesota.
He played in one game for the Chargers last season.
Reaves became expendable with starting running back DeAngelo Williams expected to play after missing the past four games with an ankle injury.