Sergio Busquets warns Spain “cannot afford to get distracted” when they face Italy in the Group C opener on Sunday.
“It is a great thing to start with Italy, although they will be difficult to beat,” Busquets told EFE.
“They are without doubt very strong rivals and we cannot afford to get distracted at any point from the first minute to the last.
“The opening game is key, although there is also time to recover.”
Spain are the reigning World and European champions, but reports continue to suggest they are plagued by in-fighting between the Barcelona and Real Madrid clans.
“It is difficult to be friends with someone when they’re not in your club side and you don’t get to see them every day throughout the year,” said Busquets.
“However, it’s false to think there’s a war between us in the locker room. There is no problem in talking about anything.”