Spain coach Vicente del Bosque has given striker David Villa extra time to prove his fitness after announcing he won't give the defending champions' definitive squad list for Euro 2012 until May 27.

Del Bosque was originally set to reveal his 23-man team four days earlier but says the Copa del Rey final between Barcelona and Athletic Bilbao on May 25 has led him to push the date forward.

Villa has yet to play for Barcelona since undergoing leg surgery in December. Del Bosque reiterated that the European champions would do all they could to accommodate their all-time leading scorer's return.

Spain's bid to become the first team to defend its title after winning the World Cup begins with its Group C opener against Italy on June 10.