"We are thrilled to have D.J. back in the fold with us," said general manager John Lynch in a statement released after the signing became official. "Our team believes a great defense starts up front, and D.J. is as a key component on our defensive line. We have enjoyed watching him develop from a sixth-round pick to a versatile starter and can't wait to continue to see him grow and get even better."
San Francisco made Jones a sixth-round selection out of Ole Miss in 2017. He registered 20 tackles, a career-high three sacks, and a pass defensed through 14 games this past season.
Jones, 26, has recorded 70 tackles, five sacks, two passes defensed, and a forced fumble through his four NFL seasons.
Note: This article has been updated to include the statement from John Lynch, which was released on March 22.