The 19-year-old forward scored 10 goals in 19 games in Holland's second division last season.
Ormond Beach native Kai Koreniuk joined Dutch soccer club AZ Alkmaar on a free transfer Tuesday, ending his nearly four-year stint at Vitesse Arnhem.
Koreniuk, who played for Seabreeze as a freshman in 2012-13, scored 10 goals in 19 games for Vitesse's under-21 squad in Holland's second division this past season. AZ spokesman Sander Nanne said Koreniuk's contract runs through the summer of 2019 with an option for two more years.
The 19-year-old forward is expected to start at Jong AZ, the club's under-21 squad.
"I thought it was a good step for me … and I think have a chance to play for the first team here if I can develop myself and play with better players," Koreniuk said. "I'm excited to develop my career."
In his lone season for Seabreeze, Koreniuk found the back of the net 23 times in only 13 games, earning All-Area first team honors and an invitation to join Vitesse's academy. He signed his first professional contract in August 2014 and made his first-team debut the following July.
Koreniuk has also seen action in 13 youth international games — nine for The Netherlands, and four for the United States.
"Kai is a strong, fast and explosive attacker," AZ Alkmaar sporting director Max Huiberts said. "He can play as a winger, but also as a striker. We are happy that we were able to sign a talent like Koreniuk on a free transfer. "With this move he gets a podium to prove himself that he can make the step to to the first squad."