Otton isn't practicing Tuesday due to an undisclosed injury, Greg Auman of Fox Sports reports.
The Buccaneers haven't revealed the nature of Otton's injury nor its severity, but the fifth-year tight end appears unlikely to be available for Saturday's preseason game versus Kansas City. When healthy, Otton projects to take on a heavy snap share on a weekly basis, but he isn't expected to be much more than a third or fourth option in the passing game for quarterback Baker Mayfield and has never been a major red-zone target (11 touchdowns in 63 career regular-season games).