The Indianapolis Colts acquired Cam Johnson in a trade with San Francisco on Monday.
Indianapolis says it sent an undisclosed conditional draft pick to the 49ers. The Colts did not immediately announce a corresponding roster move.
The 6-foot-2, 268-pound linebacker was San Francisco's seventh-round draft pick in 2012.
The trade came just a couple of hours after Indy announced it signed rookie receiver Da'Rick Rogers to the practice squad and waived receiver Nathan Palmer with an injury settlement.
Rogers was waived by Buffalo on Aug. 26 after signing as an undrafted rookie. He was a highly touted recruit at Tennessee who immediately ran into trouble off the field and was eventually booted out of school after flunking multiple drug tests.
AP NFL website: www.pro32.ap.org