Mickens (undisclosed) was placed on the reserve/COVID-19 list Wednesday.
It's not clear at this time whether Mickens tested positive for COVID-19. He has suited up in five games for Jacksonville since being claimed off Tampa Bay's practice squad, totaling 10 yards on two catches while working as the return man on kickoffs and punts. If Mickens doesn't return in time to face the Patriots on Sunday, Tavon Austin will likely fill in as the return man on special teams.