Jones underwent sports hernia surgery roughly three weeks ago, Ian Rapoport of NFL Network reports.
The procedure is likely related to the groin issue that landed Jones on injured reserve for the final eight games of the 2016 season. While it isn't clear when Jones is aiming to return, Rapoport added that the defensive lineman is likely to remain a free agent until after the season begins. Health will be a concern for any team interested in signing the veteran tackle, considering he's missed 33 games in his six-season career.