The San Francisco 49ers reportedly tabbed Jim O'Neil as Eric Mangini's replacement as the team's defensive coordinator on Tuesday, per CSN Bay Area's Matt Maiocco. Fox Sports' Mike Garafolo confirmed the report.
O'Neil worked at the college level from 2001 to 2008 and joined the New York Jets as a defensive backs coach in 2009. After being the Buffalo Bills' linebackers coach in 2013, he spent the last two seasons as the Cleveland Browns' defensive coordinator.
This news is unlikely go down well in the Bay Area.