Potter had to know he wasn't going to start over Kaleb. So I guess he thought he might get to start at the 4? I mean, Holtmann was very blunt and quick to answer in the post-game presser for the exhibition that we wouldn't see much of Kaleb and Potter together for defensive reasons, so I'm not sure how Potter just now is getting the picture that he wasn't going to be a starter this season (yet he would have been a very important rotation player).
This definitely sucks for our post depth. I actually had some hope that maybe Potter had turned a bit of a corner given that he put up 13 and 6 in only 10 minutes in the exhibition. LeDee looked solid, too, but in the preseason interviews the coaches did a lot of talking about things Ledee needed to work on, so I'm not exactly super optimistic about him getting thrown into the fire like this as THE back-up post player (though I guess Young can slide over there a bit, too, or even Andre sometimes). But at least Ledee will get to play!