Youth athletes are tricky. Some develop way sooner than others, then stop. Some develop late, and push past the ones who were "ballers" early on. They all hit growth spurts at different times, they all mature differently. Not taking anything away from the kid, with his lineage, he'll probably be a star.
Prime example is my daughter who pitches in softball. Has played at the highest of levels. She started out in 8U Coach pitch, unable to make solid contact, was a "contact" hitter. Other girls in her age group were hitting the fence with softballs, regularly. Mine kept grinding, keep working, kept pushing through. Literally watched her stand in pudles of sweat in our warehouse hitting softballs, getting better. Then she fell in love with pitching, and is now in her first year of 10U travel softball. She throws 48mph from a 35ft mound. That puts her in the top 10% "premier level" pitchers in the country. Will she continue to develop or flatten off? Who knows. Time will tell.
Also, she hit a growth spurt last summer and is now 5ft 1inches and weighs 115lbs and a 10 year old. She's lean and mean.
Basketball, she can't figure out her giraffe legs now. She gets stuck in the low-post on her travel basketball team, due to her height. Does that mean she won't develop into a Forward or Guard at some point? Nope. She's just outgrown her teammates, for now. Even though she's on of the better dribblers and has great court awareness, she is needed down low.
You just can't ever tell.