The Terps returned to practice last week.
The home opener will be Oct. 31 against Minnesota.
The Terps are awaiting guidance from the Big Ten about resuming their season.
The positive results span 10 different teams.
He entered the transfer portal Aug. 21.
Turner racked up 24 catches for 294 yards and one touchdown across his four years in College Park.
The Big Ten halted play Tuesday, but it left open the possibility of conducting a spring season.
Tagovailoa transferred from Alabama in May.
Jackson is one of four starters from last year's team to opt out.