#1 John Cena - Shouldn't retire from WWE in 2021

John Cena has been a part-time performer in WWE in recent years, and it doesn't seem like he will return to a full-time schedule anytime soon. Recent reports have suggested that Cena will return to WWE later this year to feud with The Tribal Chief, Roman Reigns, at SummerSlam 2021.
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Cena has indicated in the recent past that he will "never retire" from WWE, but he is close to calling time on his in-ring career. The 16-time world champion will be part of WWE for a long time, perhaps in an ambassadorial role following his retirement.
“When do I walk away with a sense of mental and physical sanity? I’m right at that precipice. I feel great, I’m in the best shape of my life,” he added. “It’s not that I couldn’t continue, but I think from this point on I run the risk of tipping that balance the wrong way.”
The WWE legend, though, shouldn't retire from in-ring action this year as he may have 2-3 matches left in him, perhaps with an up-and-coming star from NXT. He could perhaps give a young star an opportunity like Kurt Angle did all those years ago for him.