Oakland Raiders starting safety Nate Allen should be back on the playing field within three weeks barring an unexpected setback.
His 21-day window to be activated to the 53-man roster started Tuesday. Allen, a free-agent signing from Philadelphia, suffered a knee injury in Week 1. He was put on the injured reserve with the designation to return. He began to work Tuesday, and the Raiders must activate him in the next three weeks. TJ Carrie is expected to move back to cornerback when Allen returns.
In other Raiders’ notes:
Safety Tevin McDonald cleared waivers and returned to the practice squad. According to league transactions, safety Keenan Lambert was placed on the injured list. Linebacker Korey Toomer replaced him on the injured list.
Oakland general manager Reggie McKenzie told reporters that linebacker Neiron Ball could be out a few weeks with a knee injury.
