New England Patriots tight end Rob Gronkowski announced his retirement from the game of football last month, but there seems to be some doubt as to whether or not Gronkowski is really done.

Count New York Jets safety Jamal Adams among those who does not believe Gronkowski has played his last game on the gridiron, as Adams thinks he will definitely be back:

“I was sad,” Adams said when asked how he felt about Gronkowski's decision to retire, according to Brian Costello of the New York Post. “I was upset because going against him is what I look forward to. I like going against the best, and obviously, he was the best. I hope he comes back. I know he will. I don’t believe it yet.”

At just 29 years old, Gronkowksi may seem too young to hang up his cleats, but he has experienced a plethora of injury issues over the last several years. This past season, he barely looked like a shell of his former self and was not moving all that well for most of the year.

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The Amherst, N.Y. native did manage to haul in 47 receptions for 682 yards and three touchdowns, which are solid numbers for most other tight ends, but for a four-time First-Team All-Pro like Gronk, those are light statistics.

Gronkowski, who played his collegiate football at the University of Arizona, was originally selected by the Patriots in the second round (42nd pick overall) of the 2010 NFL Draft.

He went on to win two Super Bowls with New England. Remember: Gronkowski was injured during the Pats' Super Bowl victory over the Atlanta Falcons in February 2017.