Alex Mack is expected to sign with the San Francisco 49ers, according to a source.
Mack played under Kyle Shanahan with both the Cleveland Browns and Atlanta Falcons.
The center is a six-time Pro Bowler.
Alex Mack is expected to sign with the San Francisco 49ers, according to a source.
Mack played under Kyle Shanahan with both the Cleveland Browns and Atlanta Falcons.
The center is a six-time Pro Bowler.