The 49ers drafted Eli Harold with the 79th overall pick in the 2015 NFL Draft, and they expect him to get after the quarterback.
The rookie edge player out of Virginia recently showcased his athleticism by posting a video of drills on Instagram.
Harold, 21, checked in at 6-foot-3, 247 pounds at the NFL Scouting Combine.
He also measured out with 33-inch arms, posted a 34.5-inch vertical jump, and put up 23 reps of 225 pounds on the bench press.
Harold expects to add to the outside linebacker depth, playing with Aldon Smith, Ahmad Brooks and Aaron Lynch.
He had 141 total tackles over three seasons at Virginia, and also racked up 17.5 sacks.