By Pilar Suarez, Goal.com
Barcelona have to win on Tuesday. If the Catalans are to progress to next month's Champions League final in Munich, they will need to overturn a one-goal deficit from the first leg in London last week. And with the Blues set to repeat their Stamford Bridge strategy of defending in numbers and attacking on the break, Barca look to be in for a tough test.
Coach Pep Guardiola was left frustrated following the defeat in London and then saw his side lose the Clasico to Real Madrid at Camp Nou on Saturday. And with their hopes of winning La Liga now seemingly in tatters, the Barca boss must ensure the same thing does not occur in Europe.
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