The San Francisco 49ers have agreed to sign Alex Mack to a one-year, $5.5 million deal.
Mack previously has worked with Kyle Shanahan with the Cleveland Browns and Atlanta Falcons.
Mack is a six-time Pro Bowler at center.
The San Francisco 49ers have agreed to sign Alex Mack to a one-year, $5.5 million deal.
Mack previously has worked with Kyle Shanahan with the Cleveland Browns and Atlanta Falcons.
Mack is a six-time Pro Bowler at center.