According to an NFL source, Patriots second-year outside linebacker Shawn Crable and veteran left defensive end Ty Warren will start training camp on the team's physically unable to perform list.
Three other players will join Crable and Warren, rookie offensive lineman Rich Ohrnberger, offensive tackle Mark LeVoir (shoulder) and rookie defensive lineman Darryl Richard.
Crable's inclusion on the list is a surprise, as he participated in organized team activities during the off-season. Warren had surgery on both groins in January and also had a procedure to clean up his right knee in February.
It is believed that all five players were placed on the active/PUP list, which means that they'll be eligible to return during training camp when the team deems them ready. Reserve/PUP dictates that a player must sit out the first six weeks of the regular season before he can be activated.
Update 9:13 p.m. -- All five players were placed on active/PUP.
The Patriots also placed rookie wide receiver Brandon Tate, who is rehabbing a torn anterior cruciate ligament he suffered playing for the University of North Carolina, and offensive lineman Jermail Porter, a converted wrestler, on the active/non-football injury list (NFI).