The Panthers released Haynes on Tuesday, Darin Gantt of the team's official site reports.
Haynes (undisclosed) worked out with the Panthers on Thursday, Aaron Wilson of KPRC 2 Houston reports.
The Cardinals released Haynes on Friday.
The Cardinals signed Haynes to a contract Tuesday.
Haynes (concussion) has been ruled out ahead of Sunday's game against the Buccaneers.
Haynes sustained a concussion in Sunday's 26-0 loss to the Jaguars and did not return, David Newton of ESPN.com reports.
Haynes (back) is active ahead of Sunday's game against the Jaguars, Darin Gantt of the Panthers' official site reports.
Haynes registered seven tackles (five solo), including a sack, in Carolina's 21-17 loss to the Buccaneers on Sunday.
Haynes (back) is active for Sunday's game against the Buccaneers, Darin Gantt of the Panthers' official site reports.
Haynes (back) is listed as questionable for Sunday's game at Tampa Bay.