According to ESPN's Adam Schefter, Gronkowski will not attend the start of New England's offseason program Monday, as he decides whether or not to play in 2018.
Gronkowski said after the Super Bowl he was considering his options and has not committed to returning for a ninth National Football League season in 2018.
The Patriots restructured Gronkowski's contract before the 2017 season to add a number of incentives, which the tight end reached during that season.
Graeme Murty apologises for Rangers' first-half display in Celtic loss
I have watched it lots because there are lots of things for me to learn and lots for the players to learn. When you play for Celtic or manage Celtic the expectations are huge.
The Patriots will open their voluntary offseason workouts on Monday. The report notes he has had "good communication" with the Patriots.
If Gronk does decide to step away from football, Dwayne Allen is now in line to be quarterback Tom Brady's No. 1 option at tight end.
During the team's annual pre-draft press conference Friday, Patriots coach Bill Belichick made mention that while he expected heavy attendance, there were some players who had "other commitments".