I'd take em back, but assuming they move on since they are graduating, our starting 5 is this: (MPG in parentheses)
G: Portal Guard (28)
G: Castle (28)
W: Jackson (28)
W: Karaban (28)
C: Clingan (28)
Bench:
G: Ball (10)
G: Diarra (10)
W: Ross (5)
W: Stewart (5)
PF: Samson (15)
C: Singare (2)
That leaves ~15 MPG for another portal player, likely a back up center because Singare is so raw. And obviously the rotation is gonna be trimmed down as the season goes on, so I think we'll see some minutes competition between Ball/Diarra, and Stewart/Ross. Samson is an interesting case. If he develops the way Hurley talks about him, then that may mitigate the need for a backup C in the portal because he could definitely fill in that role.
We still need another proven shooter though, and they would likely steal the minutes from a mix of Ball, Diarra, Stewart, and Ross. That's my take on the situation going into this offseason.