Premier League Relegation Odds

There are 20 clubs in the Premier League. During the course of a season (from August to May) each club plays the others twice, for a total of 38 games. Teams are ranked by total points, then goal difference, and then goals scored. At the end of each season, the club with the most points is crowned champion. If points are equal, the goal difference and then goals scored determine the winner. If still equal, teams are deemed to occupy the same position. If there is a tie for the championship, for relegation, or for qualification to other competitions, a play-off match at a neutral venue decides rank. The three lowest placed teams are relegated into the Football League Championship, and the top two teams from the Championship, together with the winner of play-offs involving the third to sixth placed Championship clubs, are promoted in their place.

Which teams leaves Premier League 2011/2012?