The Raiders cut Magnuson on Thursday, NFL reporter Aaron Wilson reports.
Magnuson was waived by the Raiders, Matt Kawahara of the San Francisco Chronicle reports.
Magnuson signed a contract with the Raiders on Wednesday, Scott Bair of NBC Sports Bay Area reports.
Magnuson signed with Buffalo on Tuesday, Chris Brown of the Bills' official site reports.
Magnuson (undisclosed) was waived off 49ers' injured reserve Friday, Matt Barrows of The Athletic reports.
Magnuson (undisclosed) reverted to the 49ers' injured reserve Friday after clearing waivers, per the NFL communication's official transaction log.
Magnuson was waived by San Francisco on Thursday with an injury designation, Jennifer Lee Chan of NBC Sports Bay Area reports.
Magnuson (hamstring) is not present on the 49ers' injury report for Week 3.
Magnuson (hamstring) won't play Sunday against the Lions, Cam Inman of The San Jose Mercury News reports.
Magnuson has been ruled out for 6 to 8 weeks after injuring his hamstring in Saturday's preseason loss to the Texans, Nick Wagoner of ESPN.com reports.