The Brazil-born attacker cannot believe his luck that his first outing for La Roja, against Italy next week, will be at the home of his club side
The 25-year-old forward has, of course, already been capped at international level by his native Brazil but is eligible to play for La Roja because he never featured for the Selecao in a competitive fixture.
Having now declared his intention to represent Spain, he is delighted that his first outing for his adopted nation, a friendly against Italy next week, will be at his club's home ground.
"I am very happy about the call from [coach Vicente] Del Bosque. It is very special for me that the game against Italy is at the Calderon," Costa told Spanish newspaper AS.
The striker isn not the Atletico player to be involved in Wednesday's fixture, as he will be joined in Del Bosque's squad by club team-mates Juanfran and Koke, both of whom are also looking forward to facing the Azzurri.
"I'm proud and happy to return to the national team, it is a good match to prepare for the World Cup," Rojiblancos right-back Juanfran enthused.
Midfielder Koke said: "It's a tremendous pride to be with the team. I am very happy to be playing at home against Italy and I hope that these calls are repeated in the future."
Spain's World Cup campaign kicks-off on June 13 against the Netherlands.