Tampa Bay placed Ryan (foot) on injured reserve Tuesday, Scott Smith of Buccaneers.com reports.
Per Ian Rapoport of NFL Network, Ryan is scheduled to undergo surgery Wednesday to repair a Jones fracture in his foot, which he sustained during the team's Week 4 matchup against Kansas City. With the move to IR, he'll be forced to miss at least four games, but he could potentially be sidelined even longer. In his absence, Keanu Neal is expected to continue garnering an increased role.