Rob Gronkowski Says He'd Retire If Forced To Decide Now

If he had to make the decision today ... Rob Gronkowski says his football career would be over -- telling TMZ Sports he'd retire if the NFL made him choose right now.

"If they're like, 'Rob, you've got to decide right now, right this second if you're playing next year,' I would say no right now," Gronk said. "I would be like, 'No, I'm not playing.'"

The tight end -- who joined Babcock and Mojo on the "TMZ Sports" TV show (nightly on FS1) -- said he's just too beat up right now following his 11th season in the league to go ahead and definitively move forward with Year #12.

"If I had an answer right now," Gronk said, "it would be no."

Good news for the Buccaneers, though ... Gronk does not have to decide at this moment -- and he acknowledged his mind could change in the next couple of weeks.

The future Hall of Famer tells us once his body's healed and he's had some time to reflect on the season, the answer could very well turn into a yes.

"I just want to heal completely, see where my thoughts are from there," Gronk said. "Just let things settle down -- got to just heal a little bit. Fix all the bumps and bruises."

As for if Tom Brady's upcoming decision about his future could affect Gronk's, Rob tells us it all could play a role -- though he has to do what's best for him first and foremost.

There's more, Gronk also told us he does not think the Bucs' messy breakup with Antonio Brown played a role in their early playoff exit ... saying the locker room was full of too many veterans to let it affect them that negatively.

"There's so many experienced pros in our locker room," Gronk said. "It's not like we have a young locker room or anything like that."

We also talked to Gronk about his partnership with Groupon. The superstar tight end teamed up with the company to give one extremely lucky fan a chance to literally celebrate the Super Bowl at Rob's actual house in Foxborough.

As you might expect from Rob ... the house is awesome. It's nearly 5,000 square feet of awesomeness ... and if you're fortunate, you and your buddies could be posting up on Gronk's couch when the big game rolls around on February 13.

Good luck!!