Marshawn Lynch left Sunday's Week 14 game against the Cardinals in the second quarter due to tightness in his troublesome back, but returned after a series off.
The 49ers and Falcons have both requested permission to speak with Broncos OC Adam Gase about their head coaching vacancies.
Tom Coughlin has been told he will return to the Giants in 2015.
A source tells the Cleveland Plain Dealer that Browns OC Kyle Shanahan is on the 49ers' list of head coaching candidates.
Kyle Orton has informed the Bills he's retiring.
Bears fired coach Marc Trestman and GM Phil Emery.
Falcons fired coach Mike Smith.
Jets fired head coach Rex Ryan and GM John Idzik.
Coach Mike Tomlin said Le'Veon Bell's right knee injury is "not anything major."
A.J. Green is in the concussion protocol.
By losing to the Saints in Week 17, the Buccaneers secured the No. 1 overall pick in the 2015 NFL draft.
Julio Jones caught 4-of-8 targets for 58 yards in the Falcons' Week 17 loss to the Panthers.