Mack announced his retirement Thursday, Michael Silver of NFL Network reports.

EDGE Analysis

Mack was contemplating retirement throughout the offseason, and he'll ultimately elect to hang up his cleats following 13 professional seasons with the Browns, Falcons and 49ers. Jake Brendel and Dohnovan West seem like the most likely candidates to start at center for San Francisco in 2022.

The 49ers and Mack agreed to a re-worked deal Thursday, lowering his base salary for 2022 and 2023, Field Yates of ESPN reports.

EDGE Analysis

Mack, who is contemplating retirement, dropped his salary in 2022 from $5M to $1.12M, freeing up $4M in cap space for the 49ers. He additionally reworked his 2023 salary, but there is no guarantee the 36-year-old is returning to the field for a 14th season quite yet. The extra cap space could provide the 49ers the extra funds for a new center if Mack ultimately does decide to hang up his cleats.

Mack is mulling retirement this offseason, but 49ers GM John Lynch said Wednesday he expects the center to play in 2022, David Lombardi of The Athletic reports.

EDGE Analysis

Mack joined San Francisco on a three-year, $14.85 million deal in March of 2021 and started every game at center. He provides stability in the middle of the 49ers' offensive line, and the team will gladly welcome him back should he opt to return for a 14th NFL season.

Mack agreed Wednesday with the 49ers on a one-year, $5.5 million deal, Ian Rapoport of NFL Network reports.

EDGE Analysis

Mack has familiarity with Kyle Shanahan's offensive scheme, having previously worked with the San Francisco head coach in both Cleveland and Atlanta. The six-time Pro Bowler will replace Weston Richburg as the Niners' starting center in 2021.

Mack was activated from the Falcons' reserve/COVID-19 list Wednesday, Aaron Wilson of the Houston Chronicle reports.

EDGE Analysis

Mack was unable to play in the final two games of the regular season due to landing on the list as well as dealing with a concussion. The 35-year-old may have played his final game with Atlanta in Week 15 as his contract is up in March 2021.

Mack (concussion), who sat out Atlanta's final two games to close out the regular season, started 14 games in 2020.

EDGE Analysis

A concussion held the six-time Pro Bowler out Week 16 at Kansas City, while a stint on the reserve/COVID-19 list heading into Week 17 precluded any opportunity of Mack returning for the season finale at Tampa Bay. The 35-year-old center has suited up for 78 of a possible 80 games since joining the Falcons in 2016, but his future in Atlanta remains tentative with his contract set to expire in March.

Mack (concussion/illness) is slated to miss Sunday's game against the Buccaneers, William McFadden of AtlantaFalcons.com reports.

EDGE Analysis

Mack, who was placed on the reserve/COVID-19 list Thursday, will miss his second consecutive contest after a concussion held him out of a Week 16 loss to the Chiefs. Matt Hennessy figures to fill in at center during Mack's continued absence.

Mack (concussIon) was placed on the reserve/COVID-19 list Thursday, Will McFadden of the Falcons' official site reports.

EDGE Analysis

The six-time Pro Bowl center was already coping with a concussion, but now a shift to the reserve list places his Week 17 status in even greater question. Mack couldn't suit up last Sunday during a road loss to the Chiefs, handing the 35-year-old his first game absence since 2014. Third-round rookie Matt Hennessy is slated in as the Falcons' replacement at center if Mack is unavailable to face Tampa Bay on Sunday afternoon.

Mack (concussion) was held to limited participation during Wednesday's practice, Jason Butt of The Atlanta Journal-Constitution reports.

EDGE Analysis

The six-time Pro Bowl center was forced to miss his first game since 2014 last Sunday during a loss to Kansas City, opening the door for third-round rookie Matt Hennessy to make his starting debut. If Mack is unable to clear NFL concussion protocol in time for Sunday's road trip to Tampa Bay, Hennessy would be slated for another start against the Buccaneers' top-ranked rush defense. There's potential the matchup could be the last of Mack's Falcons career, as he becomes an unrestricted free agent in March.

Mack (concussion) has been ruled out for Sunday's game against the Chiefs, D. Orlando Ledbetter of the Atlanta Journal-Constitution reports.

EDGE Analysis

Mack did not participate in practice in any capacity this week. Look for Matt Hennessy to slide into the starting lineup.