Bill O'Brien

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Penn State football coach Bill O'Brien speaks at his weekly news conference in State College, Pa., Tuesday, Sept. 4, 2012. (AP Photo/Centre Daily Times, Nabil k. Mark)

Penn State NCAA college football coach Bill O'Brien, right center foreground, leads his team into Beaver Stadium for their season opener against Ohio in State College, Pa., Saturday, Sept. 1, 2012. (AP Photo/Gene J. Puskar)

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FILE - This April 21, 2012 file photo shows Penn State head coach Bill O'Brien during a news conference after the NCAA football team's annual Blue White spring scrimmage, in State College, Pa. O'Brien says his priority right now is to try to convince his current players from transferring. (AP Photo/Keith Srakocic, File)

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New Hampshire Speaker of the House Bill O'Brien join supporters of Republican presidential candidate, former House Speaker Newt Gingrich as they listen to Republican presidential candidate, former Massachusetts Gov. Mitt Romney claim victory in the New Hampshire presidential primary Tuesday, Jan. 10, 2012, in Manchester, N.H. (AP Photo/Jim Cole)

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Bill O'Brien comes to Penn State after four years as the New England Patriots' offensive coordinator. Some notable Penn State alumni voiced ojections to the choice. (Associated Press)

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Penn State's new football coach Bill O'Brien addresses the media after he was introduced during a news conference, Saturday, Jan. 7, 2012, in State College, Pa. O'Brien, who is currently the offensive coordinator for the New England Patriots, replaces Hall of Famer Joe Paterno, fired Nov. 9 in the aftermath of child sex abuse charges against retired assistant coach Jerry Sandusky. (AP Photo/Andy Colwell)

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Penn State's new football coach Bill O'Brien holds Penn State football helmet after he was introduced during an NCAA college football news conference, Saturday, Jan. 7, 2012, in State College, Pa. O'Brien, who is currently the offensive coordinator for the New England Patriots, replaces Hall of Famer Joe Paterno, fired Nov. 9 in the aftermath of child sex abuse charges against retired assistant coach Jerry Sandusky. (AP Photo/Andy Colwell)

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** FILE ** In this Dec. 14, 2011, file photo, New England Patriots offensive coordinator/quarterbacks coach Bill O'Brien talks with quarterback Tom Brady (12) during NFL football practice in Foxborough, Mass. O'Brien's agent said he was interviewing Thursday, Jan. 5, 2012, for the vacant Penn State head-coaching position. (AP Photo/Stephan Savoia, File)

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In this photo taken Aug. 11, 2011, New England Patriots offensive coordinator Bill O'Brien, left, alongside quarterback Tom Brady looks on from the sidelines during the second quarter of a NFL preseason football game against the Jacksonville Jaguars in Foxborough, Mass. O'Brien has agreed to become Penn State's first new head football coach in nearly a half-century. Two people in the NFL with knowledge of the search told The Associated Press on Friday, Jan. 6, 2012, that O'Brien has told them he plans to replace fired coach Joe Paterno. (AP Photo/Elise Amendola)