Detroit Lions nearly traded for Rob Gronkowski, but the Patriots TE threatened retirement - Pride Of Detroit
Patriots trade Rob Gronkowski to Buccaneers for fourth-round pick - ESPN
Rob Gronkowski cleared from concussion protocol for Super Bowl 2018
GoLocalProv Gronkowski Clears Concussion Protocol, Set to Play in Super Bowl 52
Why Now: What Got Rob Gronkowski Out of Retirement
Patriots star Rob Gronkowski cleared to play in Super Bowl
After Super Bowl loss, Rob Gronkowski says he isn't sure he'll play next season
Gronkowski cleared to play vs. Jets
Rob Gronkowski feels Andrew Luck's pain, opens door for his own return
Statement from Robert Kraft on the retirement of Rob Gronkowski
Five places one NFL analyst believes Rob Gronkowski could end up
Work is play for Rob Gronkowski