FILE - Cleveland Browns punter Jamie Gillan looks on during pre-game warm-ups before an NFL football game against the Baltimore Ravens, Nov. 28, 2021, in Baltimore. The Browns placed Gillan and starting linebacker Anthony Walker Jr. on the reserve-COVID-19 list on Thursday, Dec. 9, 2021 in advance of Sunday's key matchup against the Baltimore Ravens. (AP Photo/Terrance Williams, 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 linebacker Anthony Walker Jr. looks on from the sideline during the first half of an NFL football game against the Baltimore Ravens, Nov. 28, 2021, in Baltimore. The Browns placed Walker Jr. and punter Jamie Gillan on the reserve-COVID-19 list on Thursday, Dec. 9, 2021 in advance of Sunday's key matchup against the Baltimore Ravens. (AP Photo/Terrance Williams, file)