Preseason Top-15 Team to fall out of the Rankings?

Out of all of the teams likely to be included in the top-15 to start the college football season, which team will fall out of the rankings completely by

Out of all of the teams likely to be included in the top-15 to start the college football season, which team will fall out of the rankings completely by season's end? Andy has a contender for this not so prestigious spot. The Auburn Tigers.