So next year assuming no trades:
7 guys guaranteed:
IT
Jaylen
Marcus
Rozier
Horford
Avery
Jae
1 guy who we will probably match:
KO
2 Guys who will probably another contract (I know these are arguable, and Jonas is pretty hard done by):
Gerald
Jonas
1 rookie who goes straight into the rotation:
Fultz/Ball/Jackson
1 guy who will definitely come over next year
Zizic
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That's 12 guys, and that means there will be 4 roster spots open for these people (in no order):
Big FA signing (or strike-out mid-level FA signing)
Jonas
Zeller
Yabu
Demetrius
James Young
Ralph Nader
2017 second round pick
Winner gets 5 TPs. Will bump closer to draft and FA, But you get bragging rights (and 5 extra TP's if you guess BEFORE the last game of the Finals.