Two backups, Zac Stacy and Khiry Robinson, are returning from broken bones. Stacy was waived Wednesday with a failed physical designation because of a fractured ankle that required surgery. There's a good chance Robinson, who broke his leg last season, could begin training camp on the physically unable to perform list.
Pierce must serve a two-game suspension to start the season because of a DUI arrest in March 2015.
Players reported to training camp Wednesday.
In four seasons, Pierce has rushed for 1,345 yards and five touchdowns. His best year came as a rookie in 2012, when he rushed for a career-high 532 yards. He had no role last year in Jacksonville, where he had only six carries for 11 yards.