Is Jalen Johnson a "top 10 player"? I think this is a reasonable idea, but I am with perks-a-beast, I think the pick is going the other way.
As for ATL, I feel that they have a critical decision to make. Do you continue to build around Young, understanding that he is up for a big contract if he declines his option, or do you call the end of the Young era, trade or otherwise move on from him, and build around what appears to be a very good young core (including adding with the NOP pick)?
If it was me, I would try to trade Young and reset, but if they could get Giannis, you definitely would have to consider it.