11:54am: As expected, Osgood has been placed on IR as the corresponding transaction, tweets Matt Maiocco of CSNBayArea.com. The 49ers have now confirmed both moves.
10:34am: With their depth at inside linebacker thinning out due to injuries, the 49ers have signed a veteran free agent to help fortify the position, adding linebacker Desmond Bishop, according to Matt Barrows of the Sacramento Bee (via Twitter). Bishop, who was cut earlier in the month by the division-rival Cardinals, had tried out for the Niners last week.
The Cardinals signed Bishop to a contract back in August, released him prior to Week 1, then circled back around to him in October. The 30-year-old didn’t see much action on the field for Arizona, however, and didn’t record a tackle all season for the club.
Bishop spent the first six years of his NFL career in Green Bay, emerging as one of the team’s starting linebackers in 2010 and 2011. The former sixth-round pick racked up more than 100 tackles in each of those seasons, totaling eight sacks, 10 passes defended, and four forced fumbles in those two combined years. However, injuries have since derailed his career. Bishop suffered a ruptured hamstring in 2012 while with the Vikings, and in 2013, his season was cut short after four games thanks to an ACL tear.
The 49ers have yet to announce a corresponding move to accommodate the addition of Bishop, but special-teamer Kassim Osgood underwent surgery on his finger today and will miss the rest of the season, according to Rand Getlin of Yahoo! Sports (via Twitter). The team could move Osgood to IR to open up a roster spot.