The Carolina Panthers have acquired Jared Allen from the Chicago Bears for a sixth round pick.

Allen didn't fit the Bears' 3-4 scheme and he'll now get a chance to work in Carolina's 4-3.

The Bears paid Allen an $11.5 million roster bonus.

Matt Cassel has been traded to the Dallas Cowboys by the Buffalo Bills for a 2017 fifth round pick. The Bills also sent a 2017 seventh round pick to the Cowboys. 

Cassel signed with the Bills this offseason and was released before the start of the season before he was re-signed. Tyrod Taylor won the quarterback job with the Bills.

The Cowboys have placed Tony Romo on injured reserve and Brandon Weeden will take over starting duties.

The Baltimore Ravens have acquired Will Davis from the Miami Dolphins for a late round pick to bolster their secondary.

Davis was the No. 93 overall pick in the 2013 NFL Draft.

The Dolphins have been shopping Davis since the end of the preseason.

The Dallas Cowboys have acquired Christine Michael from the Seattle Seahawks for a conditional seventh round pick.

The Seahawks had been shopping Michael since they signed Fred Jackson.

Dallas has been adamant about the faith in their three-headed backfield of Darren McFadden, Joseph Randle and Lance Dunbar. Jerry Jones previously mentioned the team could look to add another young back to the equation.

The Arizona Cardinals have acquired Matt Barkley from the Philadelphia Eagles.

The move sets up the possibility of Tim Tebow making the Eagles' final roster.

Tebow had a solid performance for the Eagles in their final preseason game.

Robert Griffin III has blamed an intern for liking a post on Instagram that criticized the Washington organization, including Dan Snyder and the front office. The post also lauded Griffin.

"I just wanted to set the record straight on this one," wrote Griffin on Instagram. "I did not "like" that IG post ridiculing our team. I have not been social media active consistently for awhile now and am ultra-focused on working to get back on the field and trying to help this team. One of our interns who helps with Instagram liked the post. As soon as I was made aware of it, it was immediately unliked. That is not how I feel and I appreciate your understanding."

Some high-ranking Washington officials and coaches want to part ways with Griffin, who has been sidelined with concussion symptoms, but are meeting resistance from ownership.