Carolina receives one-week roster exemptions for each player before they’ll be forced to add them to their active roster.
Davis finished serving his one-game ban for the blindside hit he put on Packers WR Davante Adams a few weeks ago. Initially, the NFL gave Davis a two-game suspension before they later reduced it to come game after an appeal.
As for Johnson, he was suspended four games for violating the NFL policy on performance-enhancing substances.
Davis, 34, is a former first-round pick of the Panthers back in 2005. He was in the final year of his three-year, $18 million contract that includes $11.5 million guaranteed when he and the Panthers agreed to a one-year, $6.75 million extension through 2018.
In 2017, Davis has appeared in 14 games and recorded 66 tackles, 2.5 sacks, and a fumble recovery. Pro Football Focus has him rated as the No. 25 linebacker out of 92 qualifying players.
Johnson, 31, is a former third-round pick of the Panthers back in 2007. He returned to the Panthers this past March on a two-year, $8 million contract that included $2.5 million guaranteed.
Johnson stands to make a base salary of $1 million for the 2017 season to go along with $2.25 million in 2018 and a $1 million roster bonus.
In 2017, Johnson has appeared in 11 games for the Panthers and recorded 16 tackles, no sacks and a pass defense.