I'm on board with Zizic Rollie, every time you take a look at this guy and he just jumps off the screen. Hard nosed, strong, wide shoulders let him cut out space under the basket. Not block machine but protects the rim by his presence on the court. I like that his brother had a long career in the Euroleague.
Once he matures more physically watch out, not every day you come across a player with that kind of physical ability who still will be the biggest hustler on the court. He's one of the main reasons I'd hope a consolidation trade is in our near future.
As for how good I think he can be, he doesn't have the skill of Jokic or the size of Nurkic but I'm hoping he can find his own niche in the league, and rise up as the next talented Eastern Euro player too outperform their draft spot.
About his brother Andrija, I definitly agree that having an ex-pro in your family helps. So many of todays NBA players had some pro sport roots. Particulary in the NBA today, there are about 4,5% of sons or grandchildren that had their father or grandfather in the league. Huge number.
To put it in a perpective:
450 NBA players - 20 siblings - 4,5%
7,4 b people - about 3500 NBA players in the history - 0,00000047% My math may be flawed but it kinda helps your chances to make it to the league

for about 10 million times.
I guess that the number is more than 20% of total players if include other sports at the pro level.
https://en.wikipedia.org/wiki/List_of_second-generation_National_Basketball_Association_playersAs for Žižić's brother Andrija, he was a fine Euroleague/Croatian league player.
Different than Ante although both are big-men, less explosive and bruising, but he had more technique in his game. He was a 4.
Nice midrange shot, crafty inside, strong base, he knew how to get to the line inside, kept good position on the boards, more of an introvert type, just kept playing with his mouth closed. Never to high, never too low, but a fighter, competitor. Ante is an "animal", will-player atm.
One more note, another Žižić/Celtic connection. Andrija won the first non-Cibona Croatian Basketball chapionship, tandeming in the frontcourt with an ex-Celtic Dino Rađa (aged 35, but could still play), after more than a decade long big-throphy drought, for his native Split club.
I said it earlier on the forum. I live in Zagreb and will keep you posted on Ante's play for the Cibona club this year.