The Catalan club head to the Mestalla on Thursday having suffered from an indifferent run of form since their 1-1 draw in the first leg at the Nou Camp and Eto´o has warned his team-mates they need to improve their performance as they go in search of silverware.
"Our life is at stake in Valencia," Eto´o told the club´s official website www.fcbarcelona.com.
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