The Raiders had defensive end Andre Carter, who played for both Cal and the 49ers, in for a workout Tuesday.
After being evaluated by Raiders general manager Reggie McKenzie and members of the personnel department, Carter good-naturedly waved off reporters who had questions.
“I’ve got to stay low key,’’ Carter said. “If it works out, God willing . . .’’
Carter, 33, is coming off a season with the New England Patriots in which he had 10 sacks and tied the club’s single-game sack record with four against the New York Jets.
However, Carter tore his left quadriceps tendon on Dec. 18 and missed the remainder of the season.
Coach Dennis Allen confirmed Carter’s presence and said, “We’re shaking all the bushes and seeing what falls out, and if we feel like we’ve got something that can help us, we’re going to do it.’’
Carter played as an outside linebacker in a 3-4 defense with both the 49ers under Mike Nolan, but has flourished as an end, with 10 or more sacks in three of his last five seasons and 76 for his career.
The Raiders are primarily a 4-3 team but have shown some 3-4 and plan have multiple schemes.
The Raiders currently have Matt Shaughnessy and Lamar Houston as the starting defensive ends, with Dave Tollefson in reserve and a rookie fifth-round draft pick in Jack Crawford.
Houston, however, can also play inside, and the Raiders plan to use a lot of different combinations along their defensive front.
Raiders go to regular season mode
In a departure from previous years, coach Dennis Allen took the extra step of instituting in-season media access, meaning reporters were restricted to the first half-hour of practice. During that time, the club goes through warm-ups and some drills, with the media being excused once they go to team sessions.
Every other season since 1996, practices were open all the way through training camp and practices closed once the team returned to its home facility in Alameda.
Players who were not present or did not appear to be practicing as the team sessions began included wide receivers Jacoby Ford (foot) and Denarius Moore (hamstring), running back Rashawn Jackson (hip), linebacker Aaron Curry (knees), center Stefen Wisniewski (calf), tackle Ed Wang (shoulder), tackle Zach Hurd (head), defensive tackle Richard Seymour (veteran’s day off) and defensive tackle Jamie Cumbie (foot).
Players who were back at practice included safety Michael Huff (paternity leave), quarterback Matt Leinart (lacerated right index finger) and wide receiver Darrius Heyward-Bey (shoulder).
The Raiders must cut the roster to 75 players by 1 p.m. on Aug. 7 (Pacific Time), with the 53-man roster finalized on Aug. 31 by 6 p.m.