I see some FL invites are going out, I imagine like everything else this will be a screwed up year even for football.

 ~ Just a look at the NFL important dates ~

August 11 | Deadline for players under contract to report to their clubs to earn an accrued season for free agency.
  | If a drafted rookie has not signed with his club by this date, he cannot be traded to any other club in 2020, and may sign a player contract only with the drafting club until the day of the Draft in the 2021 league year.

SEPTEMBER
Sept. 5 | Prior to 4:00 p.m., New York time, clubs must reduce rosters to a maximum of 53 players on the Active/Inactive List.

  | Simultaneously with the cut-down to 53, clubs that have players in the categories of Active/Physically Unable to Perform or Active/Non-Football Injury or Illness must select one of the following options: place player on Reserve/Physically Unable to Perform or Reserve/NonFootball Injury or Illness, whichever is applicable; request waivers; terminate contract; trade contract; or continue to count the player on the Active List.

Sept. 6 | Claiming period for players placed on waivers at the final roster reduction will expire at 12:00 noon, New York time.
  | Upon receipt of the Personnel Notice at approximately 1:00 p.m., New York time, clubs may establish a practice squad of 10 players (clubs participating in the International Player Development Program may sign one additional international player to a Practice Player Contract.) No club, including the player’s prior club, will be permitted to sign a player to a practice player contract until all clubs have received simultaneous notification via the above Personnel Notice that such player’s prior NFL player contract has been terminated via the waiver system.

Sept. 10 | At 12:00 a.m., New York time, the Top 51 Rule expires for all NFL clubs.

Sept. 10, 13-14 | Regular Season Week 1.