The Raiders placed Lancaster (undisclosed) on injured reserve Sunday, Vincent Bonsignore of the Las Vegas Review-Journal reports.
Lancaster signed with the Raiders on Wednesday.
Lancaster suffered a thumb injury during Sunday's game against Minnesota and is questionable to return.
Lancaster was activated from the reserve/COVID-19 list Saturday.
Lancaster was placed on the reserve COVID-19 list Tuesday.
Lancaster is being evaluated for a concussion Sunday against San Francisco.
Lancaster does not carry an injury designation into the Packers' Week 2 matchup against Detroit on Monday, Wes Hodkiewicz of the Packers' official site reports.
Lancaster (knee) is active for Sunday's Week 1 matchup against the Saints, Mike Spofford of the Packers' official site reports.
Lancaster (knee) is questionable for Week 1 against the Saints on Sept. 12, Rob Demovsky of ESPN.com reports.
Lancaster signed with the Packers on Tuesday, Rob Demovsky of ESPN.com reports.