The 49ers appear to have plenty of depth along their front seven, but the team brought in three defensive linemen for workouts on Tuesday, according to a source.
One of those players is reportedly Tyson Jackson, the No. 3 overall pick of the Kansas City Chiefs in 2009. The identities of the other two players were not immediately known.
Jackson has been without a team since the Falcons released him in March with two years and $8.5 million remaining on his contract. His workout with the 49ers was reported by the NFL Network. He also worked out recently with the Los Angeles Rams.