Two sources told FOXSports.com that the Raiders offered Knapp the same position that he held with them in 2007 and 2008. Knapp has been an offensive coordinator with the San Francisco 49ers (2001-03), Atlanta Falcons (2003-06) and Seattle Seahawks (2010).
New Raiders head coach Dennis Allen and Knapp worked together as assistants in Atlanta in 2004 and 2005.
Knapp did not have an easy season with the Texans; the team's starting quarterback, Matt Schaub, was placed on injured reserve before Thanksgiving with a foot injury. His replacement, Matt Leinart, did not last long in that position, injuring his shoulder in his first game as the starter.