The Eagles signed Gray to the practice squad Tuesday.
Gray was held out of Wednesday's practice due to an undisclosed injury, Nick Wagoner of ESPN.com reports.
Gray (shoulder) was spotted working out during the 49ers' OTAs earlier this week.
Gray (shoulder) has been ruled out ahead of Sunday's game against the Rams.
Gray (shoulder) has been downgraded to out ahead of Sunday's game against the Commanders.
Gray finished his rookie campaign with one reception (seven targets) for 10 yards and one rush for nine yards.
Gray (hamstring) practiced fully Tuesday, Nick Wagoner of ESPN.com reports.
Coach Kyle Shanahan said Gray (hamstring) is considered day-to-day, Nick Wagoner of ESPN.com reports.
Gray is questionable to return to Thursday Night Football against Seattle with a hamstring injury, Nick Wagoner of ESPN.com reports.
Gray played 13 of the 49ers' 59 snaps on offense and finished with one catch for 10 yards on his lone target in Sunday's 35-7 win over the Buccaneers.