The tradition is when you announce your retirement from a sport, you stay retired in order not to tarnish your legacy. However, many sports stars across the world have gone against this kind of thinking.
One of the most notable names from the NFL to do such a thing was Brett Favre, who came out of retirement twice in his career, once with the Green Bay Packers and then with the New York Jets, to continue his playing days.
Alongside the likes of Peyton Manning and Marshawn Lynch, Calvin Johnson was another big name that announced his retirement during this offseason, ending a nine-season career with the Detroit Lions.
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However, former Lions wide receiver Nate Burleson doesn't think this is the end of Johnson's playing career in the NFL. According to CBS Sports, he believes the 30-year-old should take a year away from the game, and then join up with the New England Patriots to chase after a Super Bowl ring.
"Congratulations on your retirement, man. Now, take this year off ... then find a way to land with the Patriots and get a championship ring," Burleson wrote recently for NFL.com. "You deserve it."
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Burleson isn't the only person who thinks Johnson will return to the NFL one day, as Cincinnati Bengals defensive back Adam 'Pacman' Jones believes the wide receiver will be back too. Not in 2017 though, but for the 2016 season in six months time.
"I think he'll come back. I think he won't even take a year, if you ask me," Jones said. "I say six months and he's back. That's my opinion."
So will he be back at any point in the future? It's hard to rule it out just yet.
Johnson finished his career as one of the best receivers the league has ever seen. He appeared in the Pro Bowl six times, is a two-time NFL receiving yards leader, the record holder for the most single-season receiving yards (1,964 in 2012), the most career games with 200+ receiving yards (5), and he is the fastest receiver to reach 10,000 receiving yards.
He ended his career after earning 11,619 receiving yards and 83 touchdowns from 731 receptions. A Hall of Fame worthy career. However, the one thing that still eludes him is that Super Bowl ring. Every player joins the league and dreams of winning championships, and the former Lions receiver probably had the same wish.
He shouldn't feel the pressure of returning because of what he has managed to achieve in his career. It just all depends on if he still wishes to have a championship ring on his finger.