Gronk reached out to Bucs about potential return, opted to stay retired
Rob Gronkowski on retiring from NFL at age 29: 'I didn't even want to negotiate' - ABC News
Gronkowski announces retirement from NFL
Rob Gronkowski says he's retiring from football, again
NFL on FOX - New England Patriots star Rob Gronkowski -Gronk has announced his retirement from the NFL after 9 seasons with New England.
Ex-Wildcat Rob Gronkowski announces retirement from NFL
NY Jets nemesis Rob Gronkowski is calling it a career once more
Former Patriots TE Rob Gronkowski announces retirement for 2nd time
Former Arizona Wildcat Rob Gronkowski retires from NFL for second time - Arizona Desert Swarm
Rob Gronkowski closes the door on possible NFL comeback, says he's 'happily retired'
Rob Gronkowski announces retirement from the NFL, again - Pats Pulpit
Buccaneers TE Rob Gronkowski announces retirement on Instagram