Bayern Munich winger Julian Green has been cleared by FIFA to play for the United States.
US Soccer confirmed on Monday the 18-year-old was now available for selection for their senior team and could feature in this summer's World Cup finals in Brazil.
Head coach Jurgen Klinsmann has invited Green to join the team for next month's friendly with Mexico in Arizona.
"We are obviously thrilled," Klinsmann said. "We appreciate FIFA's effort in getting his paperwork approved, and are excited to have him on board for the game against Mexico on April 2."
Green, who was born in Tampa, holds dual citizenship and represented both countries at youth level before pledging his allegiance to the United States when he applied to FIFA for a one-time change of association.
He has played a starring role for Bayern's second team in the German Regionalliga this season, scoring 15 goals in 22 appearances.