Spain coach Luis Aragones announced a 23-man squad for next month's World Cup in Germany on Monday.
Euro 2008 gets underway on Saturday with co-hosts Switzerland pitting their promising young team against an experienced Czech Republic side keen to prove their best days are not behind them.
Patrick Mueller's decision to leave Olympique Lyon without permission to play for his national team last week was rewarded on Wednesday with a place in Switzerland's 23-man squad for Euro 2008.
Coach Koebi Kuhn's players believe they have to show pride and passion if they are to snatch an unlikely place in the quarters.