FILE - In this Aug. 15, 2019, file photo, Oakland Raiders wide receiver Antonio Brown (84) warms up for the team's NFL preseason football game against the Arizona Cardinals, in Glendale, Ariz. Brown is part of a new receiving corps that will join a revamped offensive line led by Trent Brown and a first-round running in Josh Jacobs that could provide quarterback Derek Carr with his best supporting cast in six seasons in the NFL. (AP Photo/Rick Scuteri, File)

FILE - In this Aug. 8, 2019, file photo, Denver Broncos quarterback Joe Flacco hands off to running back Royce Freeman during the first half of the team's NFL football preseason game against the Seattle Seahawks in Seattle. The Broncos open their season at Oakland on Sunday. New coach Vic Fangio has brought in a new defensive system and the offense has been dramatically changed under coordinator Rich Scangarello and new quarterback Flacco. (AP Photo/Elaine Thompson, File)

FILE - In this Aug. 22, 2019, file photo, Oakland Raiders' Antonio Brown (84) and teammates gather before an NFL preseason football game against the Green Bay Packers in Winnipeg, Manitoba. Star receiver Antonio Brown is not with the Oakland Raiders four days before the season opener amid reports he could be suspended over a confrontation with general manager Mike Mayock. Mayock issued a brief statement at the beginning of practice Thursday, Sept. 5, 2019, saying that Brown wasn't at the Raiders facility and won't be practicing a day after Brown posted a letter from the GM on social media detailing nearly $54,000 in fines (John Woods/The Canadian Press via AP, File)

FILE - In this Aug. 20, 2019, file photo, Oakland Raiders' Antonio Brown walks off the field after NFL football practice in Alameda, Calif. Coach Jon Gruden says star receiver Antonio Brown is back with the team and is expected to play the season opener on Monday, after a run-in with general manager Mike Mayock put him in jeopardy of being suspended. (AP Photo/Jeff Chiu, File)