Asomugha will be a full participant during the team's first day of training camp on Thursday.
Asomugha will be eligible for free agency again after the upcoming season. But the Raiders could try to sign him to a long-term deal after the season or choose to use the franchise tag again, which would guarantee Asomugha about $11.7 million in 2009.
The Raiders are counting on the duo of Hall and Asomugha to help improve a defense that struggled at times last season. Oakland plays predominantly man-to-man defense on the outside, putting more pressure on their cornerbacks than most teams.
Coach Lane Kiffin has talked about how the presence of Hall and Asomugha on the outside could help a run defense that allowed a league-worst 4.8 yards per carry last season.
A first-round pick out of California in 2003, Asomugha struggled early in his career. He didn't intercept a single pass in his first three seasons, getting a reputation for his poor hands.
But he had a breakthrough season in 2006, intercepting eight passes and becoming one of the top cover cornerbacks in the league. Asomugha had only one interception last season as teams often shied away from throwing to his side of the field.
Information from the Associated Press was included in this report