Here's who stood out on Day 17 of 49ers training camp. Keep in mind, second-year wide receiver Jacob Cowing did not practice.

The San Francisco 49ers could still use another starting caliber safety in their secondary, and they could swing a trade for a 2020 second-round pick.

49ers wide receiver Jacob Cowing did not practice Wednesday. Coach Kyle Shanahan said on KNBR that Cowing is dealing with the same lingering hamstring injury that sidelined him early in camp. “Yes, it is [the hamstring],” Shanahan said on the radio, via David Bonilla of 49erswebzone.com. “ He felt it yesterday, so we had to hold him back today.”

Locked into long-term contracts, Brock Purdy, Kyle Shanahan, and John Lynch give the 49ers stability, but their trajectory depends on developing young talent around an aging core and maintaining championship-level coaching.

Running back Isaac Guerendo and linebacker Tatum Bethune are showing signs of second-leaps for the 49ers entering the preseason finale.

Sudfeld spent the 2021 campaign in the 49ers organization. After starting the season on the practice squad, he was elevated to the active roster after Trey Lance went down with a knee injury. Sudfeld stuck around for the rest of the season,

The banged-up 49ers were able to welcome back some key players from injury for practice ahead of their preseason finale.