As the world waits on Brady's next move after 20 seasons as a Patriot, the Indianapolis Colts and Carolina Panthers reportedly found new starting quarterbacks in Philip Riversand Teddy Bridgewaterrespectively.
Here, we wrap up some of the other big moves that were reported to have been agreed ahead of the new league year beginning on Wednesday.
Tight end Jason Wittenreturned to the Dallas Cowboys last season after a campaign in the broadcast booth and he will be back in 2020, but with the Las Vegas Raiders. Witten, Maliek Collins and safety Jeff Heath are all thought to be making the move from Dallas to Sin City. Linebacker Cory Littleton has also agreed terms with the Raiders, according to reports.
Vic Beasley, who led the league with 15.5 sacks in 2015, is said to be heading to the Tennessee Titans. The edge rusher has only had 18 sacks combined over the previous three seasons.
Having had 11.5 sacks in 2019 with the Cowboys, Robert Quinn's agents told NFL.com he is bound for the Chicago Bears on a five-year, $70million deal. Chicago have confirmed Leonard Floydhas been released.
Malcolm Jenkins, a key part of the Philadelphia Eagles when they won Super Bowl LII, has been released, though the team confirmed two other members of their defensive backfield, Jalen Mills and Rodney McLeod, had signed new deals.
Former Panthers linebacker Thomas Davis, who spent last season with the Los Angeles Chargers, revealed he has been "reunited with my guy" Ron Rivera at the Washington Redskins.
The Chargers were busy making an acquisition themselves, bringing in offensive tackle Bryan Bulaga on a three-year, $30m deal, according to NFL.com. Who he will be protecting remains to be seen, though, with the Chargers considered one of the favourites in the Brady sweepstakes.
A day after handing receiver A.J. Green the franchise tag, the Cincinnati Bengals reportedly made two signings on the other side of the ball in nose tackle D.J. Readerand cornerback Trae Waynes.
The Jacksonville Jaguars bolstered their front seven by signing ex-Cleveland Browns linebacker Joe Schobert, while cornerback Darqueze Dennard is thought to be joining too.
Elsewhere, the San Francisco 49ers, the NFC representatives in last month's Super Bowl, confirmed they had tendered one-year contracts to restricted free agents Kendrick Bourne and Matt Breida.
Shazier suffered a spinal contusion in a head-on tackle against the Cincinnati Bengals in December 2017, an injury that required surgery to secure and repair the spine.
The two-time Pro Bowler was given a 20 per cent chance of ever walking again, but rehabilitation had him on his feet by the following April when he announced Terrell Edmunds as the 28th pick in the NFL Draft.
Shazier was placed on the reserve/PUP list for the 2018 and 2019 seasons and, although he had spoken of a desire to return to the field, the Steelers moved the player to their reserve/retired list in March.
Shazier confirmed he is now retired on Wednesday in an emotional video posted to his official social media accounts.
Appearing to fight back the tears, Shazier said: "I am here today to make sure the world knows how much I still love football, how grateful I am for everything football gave me.
"I am here today to let the world know that today I am officially retiring from the game I love so much.
"It's been over 1,000 days since I first got hurt. To lose the game in a way I never envisioned has not been easy. When you play the game of football the way I did, you convince yourself you are Superman, that nothing can stop you.
"Then, the moment I got hurt, I stopped being Superman and that was difficult to make sense.
"The way I look at it, God put us all here for a purpose. For 20 years, he let me play football, and now it's time for me to do what he wants me to do.
"I am going to step away from the game for a while and see what else life has to offer. I know football will always be here for me if I need it, but right now I am excited to explore some new challenges and different paths."
Shazier, a 15th overall pick out of Ohio State in 2014, ends his career with seven interceptions, seven forced fumbles, seven sacks and 299 tackles in 46 games.
Ohio State thanked Shazier for "everything" on their official Twitter account, while Steelers colleague TJ Watt paid tribute to a "remarkable team-mate and even better person".
Shazier has spent the last two seasons on the reserve/physically unable to perform list after suffering a severe spinal injury in December 2017.
The 27-year-old linebacker and two-time Pro Bowler, however, will remain part of the Steelers organisation.
"Ryan's placement on the Reserve/Retired List serves as a matter of protocol to ensure his continued inclusion within our organisation moving forward in his professional career," said Steelers general manager/vice-president Kevin Colbert.
"Number one, Ryan continues to be a remarkable person and just an inspiration for the whole organisation, and really for the whole community, in terms of his perseverance, overcoming what he overcame," added Steelers president Art Rooney II.
"Ryan is going to make some decisions about his future at this point. I don't want to speak for him, but I think from our side of it we would be happy to have him continue to be a part of the Steelers organisation in some capacity. We would love to be able to do that. Ryan is at the point where he's making those kinds of decisions about his future.
"He has been told by a number of people in the organization [about us wanting him to continue to be a part of us], including me."
