The Oakland Raiders made this move two days after Gannon spoke publicly for the first time since the quarterback broke a vertebra in his neck.
The 38-year-old Gannon, who was the 2002 NFL MVP, announced Monday that he would not return this season after consulting with four of the top neck and spine specialists in the country. Gannon, however, has not ruled out a return next season.
Gannon sustained the injury in the first quarter of the Raiders' 30-20 win over Tampa Bay on Sept. 26 after a helmet-to-helmet hit by linebacker Derrick Brooks.
This marks the second straight season Gannon has been placed on IR. He was hurt in a 17-10 loss to Kansas City last Oct. 20, and had shoulder surgery in November.
NOTES— The injury report for Sunday's home game, with the Raiders hosting the New Orleans Saints goes as follows: For Oakland, RB Tyrone Wheatley (shoulder), OG Ron Stone (knee), and LB Travian Smith (knee) are doubtful. RB Justin Fargas (toe), WR Doug Gabriel (leg), WR Ronald Curry (hamstring) and OT Barry Sims (foot) are questionable. For the Saints, DE Darren Howard (knee) is out. CB Ashley Ambrose (ankle), WR Talman Gardner (ankle), LB Derrick Rodgers (rib) and WR Donte Stallworth (rib) are questionable. … In placing Gannon on IR, the Raiders signed CB Brock Williams to the active roster and QB David Rivers to the practice squad.