I'd rank him as the third or 4th highest ceiling prospect we have but when you get a guy with those skills and strengths at age 18 it's entirely possible I need to watch more games of him to have a stronger opinion though
Not nearly as good as future Jokic, future Jaylen Brown, future Chris Bosh, future Magic, and future Devin Booker
Amen is more like Penny in terms of body type and skillsets entering the league. Penny probably was a better shooter I think.
His strength, athleticism, and physicality alone will get him buckets in this league. It'll be interesting to follow his development over the years, he'll just turn 19 in July. Depending on his long-term work ethic, he could prove to be a nice all-around player down the road.