The Kansas City Chiefs signed guard Kyle Long this offseason after he came out of a one-year retirement. However, Long's comeback plans are now on hold due to a leg injury that could force him to miss all of training camp, according to NFL Network's Tom Pelissero.

Long took to Twitter Thursday morning to react to the injury:

There was apparently some concern that Kyle Long's injury was a significant one that could jeopardize his comeback plans altogether, but now the hope is the 32-year-old will be back at the start of the regular season. FanSided's Matt Verderame is confirming this timetable and suggests rookie Trey Smith is a player to watch at guard with Long out.

Prior to retiring in 2020, Long had spent his entire NFL career with the Chicago Bears after they picked him 20th overall in the 2013 NFL Draft. He quickly became an impact player and made three consecutive Pro Bowls to start his career.

However, injuries soon took their toll on Long. After missing only one game over his first three seasons, he has since reached double digits in games played once. That led to him retiring in early 2020, so he didn't play last year.

But Long clearly got the itch to return, and the Chiefs brought him in as part of a revamped offensive line after their disastrous showing in the Super Bowl loss to the Tampa Bay Buccaneers. It's a bummer that Kyle Long suffered this setback, and now the hope is he'll be ready for the season and can still contribute.