49ers sign Kion Wilson, IR Blake Castonzo

The San Francisco 49ers signed former Pittsburgh Steelers linebacker Kion Wilson.

49ers linebacker Blake Costanzo was placed on injured reserve.

Wilson played in seven games last season for the Steelers with two starts.

Wilson has previous stints with the San Diego Chargers and Cxarolina Panthers.

Wilson has played in 15 career games.

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Aaron Wilson covers the Ravens for The Baltimore Sun

Aaron Wilson
Aaron Wilson covers the NFL for National Football Post, his second stint at the Post. He has previously written for Pro Football Talk and FOX Sports-Scout. Entering his 13th year covering the Baltimore Ravens, he's a beat writer for The Baltimore Sun. Wilson has also covered the Jacksonville Jaguars and Tennessee Titans.

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