FILE - In this Dec. 8, 2019, file photo, Minnesota Vikings head coach Mike Zimmer watches from the sideline during the first half of an NFL football game against the Detroit Lions in Minneapolis. The Vikings signed head coach Zimmer on Friday, July 24, 2020, to a three-year contract extension through the 2023 season. Zimmer’s record with the Vikings over six years is 57-38-1, plus 2-3 in the postseason. (AP Photo/Bruce Kluckhohn, File)

FILE - In this Sunday, Dec. 29, 2019 file photo, Baltimore Ravens defensive tackle Michael Pierce (97) celebrates his fumble recovery with linebacker Tyus Bowser (54) during the first half of an NFL football game against the Pittsburgh Steelers in Baltimore. Pierce has decided to opt out of the 2020 season out of concern for catching the coronavirus. He has asthma. (AP Photo/Nick Wass, File)

FILE - In this Sunday, Dec. 15, 2019, file photo, Minnesota Vikings running back Dalvin Cook runs with the ball during the first half of an NFL football game against the Los Angeles Chargers in Carson, Calif. The Vikings are expecting Cook to report on time for training camp, coach Mike Zimmer said Saturday, July 25, 2020. Cook has begun the final year of his rookie contract and took a break from the virtual offseason program in June, seeking a new deal. (AP Photo/Kelvin Kuo, File)