And in fairness to Detroit - it's reported that Gronkowski would have nixed a deal to play anywhere other than with Tom Brady and the Patriots.
Adding Gronkowski to the Lions would have only served to make winning the NFC North a more daunting task in 2018.
Amusing enough, the Patriots play against the Lions on Sunday Night Football in a game that marks the first time Matt Patricia will be coaching against his former team.
The Patriots already know they'll be without three players for Week 3 - Trey Flowers, Eric Rowe and Patrick Chung have already been ruled out.
As coach Bill Belichick walked onto Ford Field Sunday evening, he showed no interest in connecting with a pair of young Lions fans.
It sounds as if Gronkowski killed off the trade attempt with threats to retire and an unwillingness to work with those inside the Lions organization. He wast listed on Friday's game injury report as questionable with a hamstring injury.
Gronkowski led the Patriots with 1,084 yards and eight touchdowns a year ago across 14 games.
The Packers go on the road to face Gronkowski and the Patriots in November.