AP Source: Several asymptomatic NFL players test positive

This is a 2021 photo of Bill Lazor of the Chicago Bears NFL football team. This image reflects the Chicago Bears active roster as of Friday, April 16, 2021 when this image was taken. The Chicago Bears could be without all three of their coordinators, including Lazor, when they host the Minnesota Vikings on Monday, Dec. 20, 2021. (AP Photo)

FILE - Cleveland Browns head coach Kevin Stefanski reacts during the second half of an NFL football game against the Baltimore Ravens, Sunday, Dec. 12, 2021, in Cleveland. Quarterback Baker Mayfield and Stefanski tested positive for COVID-19 on Wednesday, Dec. 15, and will likely miss Saturday’s game against the Las Vegas Raiders as Cleveland deals with a widespread outbreak during its playoff pursuit. (AP Photo/David Richard, File)

FILE - Chicago Bears acting head coach Chris Tabor directs his team during the first half of an NFL football game against the San Francisco 49ers Sunday, Oct. 31, 2021, in Chicago. The Chicago Bears could be without all three of their coordinators, including special teams coordinator Tabor, when they host the Minnesota Vikings on Monday, Dec. 20, 2021. (AP Photo/Nam Y. Huh, File)

FILE - Cleveland Browns quarterback Nick Mullens throws during the first half of an NFL football game against the Denver Broncos, Oct. 21, 2021, in Cleveland. Mullens is slated to make his first start since last season for San Francisco. The Browns activated him from the practice squad Thursday, Dec. 16, 2021, presumably to be their No. 2 behind Case Keenum before the latest wave of positive COVID-19 results. (AP Photo/Ron Schwane, File)

This is a 2021 photo of Sean Desai of the Chicago Bears NFL football team. This image reflects the Chicago Bears active roster as of Friday, April 16, 2021 when this image was taken. The Chicago Bears could be without all three of their coordinators, including Desai, when they host the Minnesota Vikings on Monday, Dec. 20, 2021. (AP Photo)