Mitchell has agreed to terms with the San Francisco 49ers on a four-year deal, the team announced Saturday. NFL Network's Mike Garafolo reported Friday that Mitchell's contract is worth $16 million, according to a source informed of the situation.
San Francisco seemed like the best fit for Mitchell as the team employs a 4-3 defense -- the same system he played in during his three-season stint in Miami.
After four years in Houston, Mitchell signed as an unrestricted free agent in 2014 and played in 37 games (21 starts) in three seasons with the Dolphins. He amassed 72 tackles (46 solo) and two sacks there.
The defensive tackle missed half of the 2016 campaign after being placed on injured reserve due to a lingering calf injury.