Which of these high price tag EPL players needs the most IMPROVEMENT if they are going to drive their clubs to a successful 2012-2013 season? *Assuming they stay on their squads!

Real Madrid manager Jose Mourinho has a record of 28-3 as a coach in the Champions League. All three losses are attributed to none other than Barcelona. Does the Portuguese manager's current squad have what it takes to break the curse of Catalonia?