Look at his stats in the same league vs guys drafted in the same year. Brutal. All reports are that he regressed. That's not good. IMO, he won't make it.
Way too early to say, unless you are watching the games and see things you don't like imo. I watched him, I saw flashes but I also saw someone who needs to improve the physical aspects, but the skill is there despite a terrible start to the season. In his first 26 games he had 2 f***ing points. That's brutal. In the next 26 games he had 12 pts. So clearly things started going much better for him in the 2nd half, the question then becomes how much better he can do now.
If you look at Lehkonen, at 18 he put up 20 pts in 33 games, to Ikonen's 14 pts in 52 but if you look at his 2nd half, he was at a .46 ppg compared to Lehkonen's .61 which at least makes it look better. Now that he's out 6 months that really hurts as the knee injury will impact him in training this off-season and he'll miss a big chunk of next season. So next year might be more of a write off if he's not back till mid-December which would mean he'll miss over 30 games most likely out of 60.