Real Madrid captain Iker Casillas is confident that they can overturn their 2-0 defeat to Barcelona in the first-leg of their semi-final tie last week and progress to the final of the Champions League.A brace from Lionel Messi in the second-half at the Santiago Bernabeu saw Pep Guardiola’s team take a valuable two-goal away advantage to take into the return leg at Camp Nou.However, Casillas remains optimistic of a turnaround in Barcelona on Tuesday evening and is quoted as saying by Madrid’s official website as saying: "The names of the two teams that will play the final haven't been inscribed yet.“You never know what may happen. We will play in Barcelona knowing a final is set to take place in a month and that any of the four teams still in the championship may be in it."Madrid last played in the Champions League final in 2002 when they won the competition for a record ninth time by beating Bayer Leverkusen 2-1 at Hampden Park in Glasgow.Source: Goal.com