May 26, 2021
According to NFL Network reporter Tom Pelissero, the NFL has, per the terms of the CBA, designated Tuesday, July 27 as the date that 29 out of the 32 teams can report to training camp.
The date falls 47 days before the Sunday of Week 1. Meanwhile, the remaining teams Dallas, Pittsburgh, and Tampa Bay can report as early as July 21, the first two teams due to their participation in the Hall of Fame game, and the Bucs because they re opening their season on Thursday night.
Teams opening training camp on July 27 can also open their doors to fan attendance by Saturday, July 31.
The NFL is bringing back preseason games this year after canceling them last summer during the height of the global pandemic. Teams will play three preseason games starting this year, a tradeoff for agreeing to allow an extra regular-season game.