*sigh* who do you think will start at SF then? Alonzo Gee? Bennet is debatably the best SF they have and they probably want to start him to develop him along with their other young players. The one other possibility is to put him as a backup forward behind Gee and Thompson, but I personally think he is more skilled than Gee. I see something like this:
Kyrie Irving (Jarrett Jack)
Dion Waiters (Daniel Gibson?)
Anthony Bennet (Alonzo Gee)
Tristan Thompson (Earl Clark)
Andrew Bynum (Anderson Varejao)
Murray/Harris/MPJ/Grant/Jokic - 2020 NBA Champs