FIFA 17 Career Mode: 25 Wonderkids You Will Need To Sign

The youngest debutant in Croatia's footballing history occupies the number two spot on our list. Barcelona's Halilovic moved to the Nou Camp in 2014, transferring from Dinamo Zagreb, and will return there again after spending last season on loan at Sporting Gijon.

Often likened to countryman Luka Modric, the midfielder certainly shares a lot of similarities with his fellow midfielder. Both are fairly small, incredibly able on the ball, and blessed with invaluable vision.

Although only 20, the future seems bright for the Dubrovnik native - and he may not be the only success story in the Halilovic family! Younger brother Dino also signed for Barca in 2014 (albeit for their youth system!).