The 49ers activated linebacker Fred Warner from the reserve/COVID-19 list on Wednesday.
While wide receiver Deebo Samuel (foot) continues to miss practices, rookie wideout Brandon Aiyuk (hamstring) was on hand for Thursday's session, according to multiple reports.
The 49ers will issue an official practice participation and injury report in a few hours.
Head coach Kyle Shanahan and general manager John Lynch have been optimistic that Aiyuk would also be available for Sunday. The hope is to have both him and Samuel heading into the start of the season. The 49ers, however, have just one more full practice scheduled this week.
Also practicing was center Ben Garland, which is good news for the 49ers' offensive line.
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