Michu was summoned by Vicente del Bosque for the upcoming World Cup qualifying games against Belarus and Georgia after Atletico Madrid striker David Villa was forced to pull out through injury.
The 27-year-old has not represented Spain at any level yet but is determined to make the most of this chance to try and impress Del Bosque ahead of next year's World Cup in Brazil.
"Every Spanish footballer dreams of this and it's so difficult. Few people can wear the shirt of the best team in the world," Michu said.
"There are a lot of players missing, but there are great players in the squad. Let's see if fortune is with me and I can play, although I'm already grateful to be called up.
"It's the maximum to which a footballer can aspire. The national team is the best in the world, it's a privilege.
"I'm enjoying it like a kid, these are the best players in the world and it will be complicated, but I'll try to take advantage of the opportunity."