The 2014 seventh-round draft pick is still dealing with the effects of a toe sprain sustained in late May.
"It's not a serious injury, but it's a nuisance for sure," coach John Harbaugh said last month. "He was practicing very well."
When healthy, Campanaro offers an intriguing skill set as a wideout with the elusive run-after-catch ability of a punt returner.
Health is no small caveat, however. In addition to the toe sprain, the former Wake Forest star has missed time with calf, quadriceps, back and hamstring injuries.
He's managed just 17 touches for 226 yards and a pair of touchdowns in 11 career games.
Other notable players who will open camp on PUP list:
- Jaguars place cornerbacks Jalen Ramsey (core) and Aaron Colvin (foot) on active/PUP list, the team announced.