Cleveland Browns head coach Kevin Stefanski watches during practice at the NFL football team's training camp facility, Thursday, Aug. 27, 2020, in Berea, Ohio. (AP Photo/Tony Dejak)

Cleveland Browns head coach Kevin Stefanski, left, talks to quarterback Baker Mayfield before an NFL football scrimmage at FirstEnergy Stadium in Cleveland, Friday, Sept. 4, 2020. (Joshua Gunter/Cleveland.com via AP)

FILE - Cleveland Browns head coach Kevin Stefanski directs practice at the NFL football team's training facility Thursday, Aug. 20, 2020, in Berea, Ohio. The NFL’s process to test for COVID-19 has raised questions and concerns, two-plus weeks before the league plans to kick off the season during a pandemic. BioReference Laboratories said Monday, Aug. 24, 2020 an isolated contamination caused 77 most likely false positive results at its lab in New Jersey. Stefanski had one of the false positive tests, triggering anxiety for him at home with his wife and three children when was informed. (AP Photo/Ron Schwane)