Lacey signed a one-year contract with Buffalo on Thursday.
Long signed a three-year contract with Buffalo on Tuesday, Chris Brown of the Bills' official site reports.
Pitts signed a one-year contract with the Bills on Tuesday, Vic Carucci of The Buffalo News reports.
Hughes played in all 16 games for the Bills this season, posting 7.0 sacks, 37 tackles and three forced fumbles.
Wallace, an undrafted rookie out of Alabama, finished his first pro campaign with 37 tackles and three passes defensed over seven games.
White (concussion) followed up a big rookie campaign with another strong season in 2018, finishing with 54 tackles, eight passes defensed and two interceptions. He's yet to miss a game through his first two pro seasons.
McCoy said the NFL is still investigating a July incident involving an attack against his ex-girlfriend at a home he owns in the Atlanta area, ESPN.com's Mike Rodak reports.
Thompson, who played eight games for the Cowboys this season before spending five more with the Bills (he missed the finale with a toe injury), will be an unrestricted free agent this offseason.
Sirles signed a one-year contract with the Bills on Wednesday, Sal Capaccio of WGR Sports Radio 550 Buffalo reports.
Alexander has been re-signed to a one-year deal, John Murphy of the Bills' official site reports.
Bolden, picked up by the Bills after being waived by the 49ers during the season, only saw three offensive snaps for the team in two games but was given some opportunity in the return game, bringing back five kickoffs for 116 yards (23.2 average).
Williams signed a reserve/future contract with the Bills, Sal Maiorana of the Rochester Democrat and Chronicle reports.
Murphy dealt with injuries for much of his first season with the Bills, Mark Gaughan of The Buffalo News reports. "I needed an extra roll of duct tape this year," said the defensive end.
Foster finished his rookie season with 27 catches (44 targets) for 541 yards and three touchdowns in 13 games.
General manager Brandon Beane confirmed this week that Allen's shoulder injury -- one that sidelined him for four games -- has completely healed and should not have any impact on his offseason work, Jay Skurski of The Buffalo News reports.
Edmunds posted a season-high 12 tackles, a sack and an interception during Sunday's win over the Dolphins.
Ivory carried the ball 14 times for 45 yards in Sunday's finale against the Dolphins while hauling in his only target for 45 yards.
Bills general manager Brandon Beane reiterated Monday that McCoy is part of the team's plan for 2019, Mike Rodak of ESPN.com reports. "LeSean will come back in 2019 and we'll go from there," Beane said.
Anderson signed a one-year contract extension with the Bills on Monday, Chris Brown of the team's official site reports.
Jones caught six of nine targets for 93 yards in Sunday's 42-17 win over the Dolphins.
Allen completed 17 of 26 passes for 224 yards, three touchdowns and an interception in Sunday's 42-17 win over Miami. He also rushed nine times for 95 yards and two touchdowns, finishing his rookie campaign with 2,074 yards, 10 touchdowns and 12 interceptions through the air, along with 89 carries for 631 yards and eight touchdowns.
McCoy rushed 10 times for 26 yards and a touchdown while catching two of three targets for 18 yards in Sunday's 42-17 win over the Dolphins. He finishes the season with 514 yards and three touchdowns on 161 carries, along with 238 yards on 34 catches.
Mills was ejected from Sunday's game against the Dolphins, Armando Salguero of the Miami Herald reports.
White is ruled out for Sunday's game against the Dolphins due to a concussion.
Lewis (concussion) has been ruled out for Sunday's game against the Dolphins.