The Kansas City Chiefs began working on overhauling their wide receiver corps by releasing Donnie Avery and A.J. Jenkins.

Jenkins, the 49ers' No. 30 overall pick in 2012, is one of the biggest draft busts in recent memory. He has managed a paltry 17 receptions for 223 yards in three NFL seasons under Jim Harbaugh and Andy Reid, two of the most respected offensive coaches in the game.

The Chiefs became the first tteam since the 1970 merger to not have a single touchdown scored by a wide receiver.

Justin Houston and the Kansas City Chiefs will resume talks on a new contract.

Houston led the NFL in sacks last season and the Chiefs are prepared to use the franchise tag on him if necessary.

The NFL's window for assigning the tag opens Monday, Feb. 16 and closes March 2. Pro Football Talk has reported Houston intends to sign the franchise-tag tender if the Chiefs are forced to go that route.

Alex Smith was shocked by the regime change of the San Francisco 49ers.

The 49ers parted ways with Jim Harbaugh and promoted Jim Tomsula to head coach.

"I think for me, it's still just tough to believe all those guys are gone, all that turnover," Smith said, via the San Jose Mercury News. "... There were a lot of ballgames that got won over the last few years, but for whatever reason, they couldn't make it work. I don't know. I wish coach Tomsula well. I wish him the best."

Smith was the starting quarterback of the 49ers when Tomsula was interim head coach in 2010.

"I loved what he brought to the team that week," Smith said. "I know he has the ability to be a head coach. He's a good man, a really good coach. I'm pulling for him."

The Seattle Seahawks are 5-1 favorites to win Super Bowl 50 next season.

Here are the Super Bowl 50 odds for all 32 teams:

Seahawks: 5-1
Patriots: 6-1
Packers: 6-1
Cowboys: 10-1
Colts: 12-1
Broncos: 12-1
49ers: 18-1
Eagles: 20-1
Steelers: 20-1
Lions: 22-1
Bengals: 25-1
Saints: 25-1
Cardinals: 30-1
Chiefs: 30-1
Ravens: 30-1
Chargers: 40-1
Giants: 40-1
Panthers: 40-1
Bears: 50-1
Dolphins: 50-1
Falcons: 50-1
Texans: 50-1
Bills: 60-1
Rams: 60-1
Vikings: 60-1
Browns: 75-1
Jets: 100-1
Raiders: 100-1
Washington: 100-1
Buccaneers: 150-1
Jaguars: 150-1
Titans: 250-1