Former Los Angeles Lakers All-Star big man Andrew Bynum is trying to make a comeback to the NBA. The Athletic's Shams Charania has the details:

Trainer Chris Johnson has been working with Bynum:

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While the 7-foot center's career has been marred with issues and injuries on and off the court, he is still just 30 years old and could still have something left in the tank. His mobility on defense would definitely be a question mark, but he could be an intimidating presence down low.

Before his career went downhill, Bynum won two championships with the Lakers and was selected to the All-Star team in 2012. He had the most productive season of his career that year, posting impressive averages of 18.7 points, 11.8 rebounds, and 1.9 blocks.

But after the Lakers dropped out of the semifinal round in the playoffs for the second straight year, Bynum's career drastically went on a downward spiral. He was traded to the Philadelphia 76ers as part of the Dwight Howard deal in the summer of 2012, but he never got the chance to don the Sixers jersey on the court as he infamously suffered a season-ending knee injury while bowling, per USA TODAY Sports' Jeff Zillgitt.

Many people have already crossed out a Bynum comeback considering his past issues and the fact that he hasn't played in the NBA since the 2013-14 season with the Cleveland Cavaliers and Indiana Pacers. Still, Bynum could prove to be a useful contributor off the bench if he gets a chance.