5. The Spurs will make a surprising cut
The Spurs currently have 17 players under contract for next season, possibly 18 if they were to make a trade with Phoenix. Recently acquired forward Al Farouq-Aminu appears to be a likely cut, though there isn't another obvious choice on the rest of the roster.
This means players that were previously believed to be "safe" may either be cut or traded to reach the 15-man roster limit. Players such as Jock Landale, Bates-Diop, or Drew Eubanks could be candidates. Landale, despite appearing to be a potential off-season steal, is only signed for the minimum, as is Bates-Diop, making them both cheap options to be waived.
Eubanks, on the other hand, could theoretically be included in a Young trade to Phoenix. His inclusion would provide the Suns with additional value, making them more likely to give up a future first-round pick while also allowing the Spurs to offset the new additions. Were that to happen, Bates-Diop could be the odd man out, with Johnson and Samanic potentially ahead of him in the rotation.
It's unknown whether these training camp predictions will actually be proven true. Fortunately, however, we won't have to wait too long to find out.