San Francisco 49ers left tackle Joe Staley is active for Thursday night's game against the Seattle Seahawks. Staley suffered a concussion during Sunday's 26-3 loss to the New York Giants and needed to pass the league's concussion protocol before being cleared to play. That Staley is active means that occurred on Thursday. Also active on Thursday night is running back Brandon Jacobs, who will make his 49ers debut after missing the first six weeks and losing $75,000 in "per game active" roster bonuses. Wide receiver Mario Manningham (shoulder) is inactive and will lose out on a $15,625 "per game active" roster bonus. For the Seahawks, the only real surprise is that seventh round pick J.R. Sweezy is inactive, leaving the team with just seven offensive linemen dressed for Thursday night's game. Sweezy opened the season as the starting right guard and has played in 30.42 percent of the offensive snaps and 29.94 percent of the Seahawks' special teams snaps this season. Seattle : WR Charly Martin, G John Moffitt, G J.R. Sweezy, DT Jaye Howard, CB Danny Gorrer, CB Byron Maxwell, S Winston Guy