A league source tells Profootballtalk.com the Bills' "current assumption" is Stevie Johnson's strained hamstring will cost him "most of the preseason."
The San Francisco Chronicle reports the Raiders are "strong players" for Darrelle Revis.
The Browns have reportedly emerged as the favorite to land free agent ILB Karlos Dansby.
The San Francisco Chronicle reports that the Raiders are interested in free agent Josh McCown, but that "many believe" it's down to the Bears and Bucs for his services.
Lions re-signed RB Joique Bell to a three-year, $9.3 million contract.
ESPN's Ed Werder reports DeMarcus Ware has requested the Cowboys to decide his future by Tuesday's 4PM ET start of free agency.
Texans released TE Owen Daniels.
NFL Network's Ian Rapoport reports the Ravens could "make a play" for free agent C Alex Mack if they strike out on free agent LT Eugene Monroe.
Buccaneers agreed to terms with DE Michael Johnson, formerly of the Bengals, on a five-year, $43.75 million contract.
Giants re-signed RB Peyton Hillis to a two-year, $1.8 million contract.
Colts re-signed K Adam Vinatieri to a two-year contract.
Redskins agreed to terms with WR Andre Roberts on a four-year, $16 million contract.