Soriano is probably the only surefire starter on next years team. Possibly Storr. It's entirely possible that Rick said to most or every other kid "you're going to have to earn a starting job and PT". A lot of the kids may not want to hear that, especially Posh. At which point, they enter the portal and then have lots of other coaches offering them starter minutes and guaranteed PT. So, as much as I would love for Posh, Wusu and others to stay, they are basically starting from scratch under a new coach and they'll have to decide if they want that. It sucks, but such is life. Same thing happens when a new boss comes in. What's that ole saying, "a new broom sweeps clean".