Stafford must pass a final round of COVID-19 testing before Sunday morning being cleared to play in the Lions' game against Minnesota, which begins at 1 p.m. ET, Adam Schefter of ESPN reports.
The 32-year-old was activated from the reserve/COVID-19 list Saturday after landing on the list earlier in the week, but he's still awaiting full clearance to play Week 9. A negative test result Sunday morning would allow him to return without missing a game. Chase Daniel lines up to start for the Lions in the off chance Stafford is unavailable for the divisional matchup.