(Photo by Jamie McDonald/Getty Images)

The 49ers are looking to make one of the best defenses in the NFL even better.

For the second time, San Francisco will workout longtime Lions edge rusher Ezekiel Ansah next Tuesday, according to Ian Rapoport of NFL Network. Ansah will be in Santa Clara on Sunday undergoing COVID testing in preparation for the workout.

The Niners are looking to add depth at edge rusher, with Ronald Blair beginning the season on the PUP list and out for the first six weeks. San Francisco was hoping former first-round pick Dion Jordan could serve as a short term replacement, but he struggled during training camp and failed to make the 53-man roster.

Like Jordon, Ansah, 31, was drafted in 2013, the Lions selecting him with the fifth pick two picks after Jordan was taken at No. 3 overall. Ansah has had the better career by far, making the Pro Bowl and earning a second team All-Pro selection in 2015.

Ansah was signed by the Seahawks last season but notched just 2.5 sacks in 11 games as he dealt with a myriad of injuries. Ansah has 50.5 sacks in 91 career games.