The Atletico Madrid midfielder was part of his country's 2014 World Cup squad which bowed out at the group stage, ending a period of dominance which saw them win three major international tournaments on the spin.
Vicente del Bosque led Spain to back-to-back European Championships in 2008 and 2012 and also the 2010 World Cup in between, but has reshaped his squad in the aftermath of their disappointment at the last World Cup.
And Koke hopes Spain's next generation can wipe away the depressing memory of the last World Cup by leading them to a third straight European Championships title in France.
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"We did not do a good World Cup and the Euros are chance for a revalidation," the 24-year-old told a news conference on Saturday. "There has been a great generational change."
Koke came on as a half-time substitute during Thursday's 1-1 draw in Italy and is relishing a fierce battle for places in Del Bosque's final 23-man squad over the coming weeks - starting against Romania on Sunday.
"Wearing the shirt of the national team is always beautiful and it will be a special match against Romania," he added.
"We have the Euros close and we are very excited. All players want to be on the list and we have to give everything for the team.
"I feel comfortable in the position put to me and what excites me is to play where the coach needs me."