http://www.dallasnews.com/sharedcon...es/stories/060610dnspobig12lede.75765a22.html When Big 12 commissioner Dan Beebe spoke Friday at the conference spring meetings about a deadline for member schools to commit, he declined to give a date. It's much sooner than anyone expected and targets Nebraska, one of the league's premier football schools and now a linchpin in the Big 12's hopes to remain intact. The Cornhuskers were given a deadline to make their conference intentions known within two weeks, multiple Big 12 sources confirmed Saturday night. Nebraska, along with Missouri, has been linked to Big Ten expansion plans. Nebraska chancellor Harvey Perlman was not immediately available for comment.