Barcelona's Chilean forward Alexis Sanchez celebrates his team second goal during the Spanish Copa del Rey (King's Cup) FC Barcelona vs Real Sociedad semi-final match at the Camp Nou stadium in Barcelona on February 5, 2014. AFP PHOTO/ JOSEP LAGO

Barcelona’s Chilean forward Alexis Sanchez celebrates his team second goal during the Spanish Copa del Rey (King’s Cup) FC Barcelona vs Real Sociedad semi-final match at the Camp Nou stadium in Barcelona on February 5, 2014. AFP PHOTO/ JOSEP LAGO

Barcelona's Chilean forward Alexis Sanchez celebrates his team second goal during the Spanish Copa del Rey (King's Cup) FC Barcelona vs Real Sociedad semi-final match at the Camp Nou stadium in Barcelona on February 5, 2014. AFP PHOTO/ JOSEP LAGO