San Francisco 49ers offensive consultant Eric Mangini at an NFL football training camp in Santa Clara, Calif., Tuesday, June 4, 2013.
San Francisco 49ers offensive consultant Eric Mangini at an NFL football training camp in Santa Clara, Calif., Tuesday, June 4, 2013. Jeff Chiu AP
San Francisco 49ers offensive consultant Eric Mangini at an NFL football training camp in Santa Clara, Calif., Tuesday, June 4, 2013. Jeff Chiu AP