The San Francisco 49ers were hoping to get Jullian Taylor back to help boost the injury-depleted depth along the defensive line. That may not happen now.

The defensive tackle showed up on Thursday's practice participation report with a new injury listed in addition to the elbow injury suffered during Week 13.

Apparently, Taylor suffered a knee injury during Thursday's practice, according to Matt Barrows of The Athletic. And the injury is significant enough that the defensive lineman is undergoing an MRI to determine the extent of the damage.

Barrows also reports that the 49ers are calling free agent defensive linemen who might be able to sign and contribute.


Taylor has been inactive the last three games and first returned to practice on Tuesday but with a brace over the elbow which suffered "ligament issues" during that Week 13 matchup against the Baltimore Ravens.

The list of 49ers defensive linemen on injured reserve includes Ronald Blair, D.J. Jones, and Damontre Moore. Pass rusher Dee Ford (hamstring) is not expected to return until the playoffs.