a top flight PG (maybe THT can be that guy if he improves his 3pt shooting), to go along with Agbaji at SG, Markkanen at SF, a solid stretch 3 PF, and Kessler as their starting 5, they'll be tough to beat. Of course, they'll need solid role players with a variety of skills on the bench to really contend. They have a great start IMO.
Sexton, Dunn, and Fontecchio are nice role players off the bench. I could see Sexton being a sixth man of the year type guy and take over Clarkson's role.