 MADRID AP - American right back Sergiño Dest is set to join Barcelona, coach Ronald Koeman said on Wednesday. The Ajax player underwent a medical in Barcelona and the clubs were finalizing the details to make the transfer official, the Barcelona coach said. He almost certainly will be with us, Koeman said. After all the contracts are signed, I have no doubt that he will be a very useful player for Barça. Koeman said the youngster will have to fight for a spot on the team but comes with the experience of already having played important matches with Ajaxs first team, including in the Champions League. I think that kind of experience will help the player but also will help the American national team, Koeman said. The 19-year-old speedy defender has a Surinamese-American father and Dutch mother, but chose to play for the U.S. national team instead of the Netherlands. Ive spoken to Sergiño about the national team, because he had the possibility to play for Holland or America, but finally a decision has to be made by the player, because thats his feeling from inside ... and he finally decided to play for the American national team, no problem, I think thats good for American soccer. Koeman has another young American player who could soon be joining Barcelonas first team in 19-year-old Konrad de la Fuente. They play in good competitions but both players are still young, Koeman said. Dest committed to the U.S. national team last October, a month after making his senior debut for the Americans. He still had the ability under FIFAs rules to change his affiliation to the Dutch national team as he had only played in friendlies against Mexico and Uruguay. Dest tied his international future to the U.S. on Nov. 16, helping the team reach... 