The Barcelona playmaker revealed that he will make himself available for La Roja's squad for the tournament in Brazil but will have to confer first with Vicente del Bosque
The 32-year-old, who made two assists for Spain in the 4-0 victory against Italy in the Euro 2012 final, had claimed on Saturday the was unsure about his future in the national team.
He will be 34 years old by the time the World Cup starts, but he does not rule out the possibility of making himself available for selection for the tournament in Brazil.
"If I feel fine, I will be there," he is quoted as saying by Marca. "I will speak with coach Vicente del Bosque but in principle, yes I will be there."
Xavi admitted that he had been lacking his incisive touch during Euro 2012, but returned to his best with an impressive display against Italy with two assists.
"Today [Sunday] I felt I was more decisive, yes," he added. "I was missing making that final pass and in the final I made two."