Boone (quadriceps) won't practice Friday and is unlikely to suit up for Saturday's preseason contest at Minnesota, Zac Stevens of TheDNVR.com reports.
Boone pulled his quad during Thursday's joint session against the Vikings, his former employer. With his new squad, he's expected to serve as a complementary back to top options Melvin Gordon and Javonte Williams, when healthy. Now that Boone is sidelined, he likely will yield that role to Royce Freeman for the time being.