You asked about Alen Halilovic - well it's a bit of a weird question.
He's 16. And playing for a regional giant. So he's obviously a talent.
However, Dinamo are a good club who used to regularly make wonderkids. Unfortunately, their business model ignores development for money (even small amounts) and as such 95% of these rising superstars fall off the face of the earth and never make it. They've had tens of youngsters like that, hyped up to be amazing. The problem is that they get sold to teams in Azerbeijan or Kazakhstan or wherever for a quick few hundred thousand euros.
He's probably going to have an ok career, he's not glittering with flair or the smartest player out there. Maybe he'll get rapidly better depending on what club he goes to.