I think the chance of making a deeper tournament run would be the main thing to bring him back. Austin is also a fun city to live in.
Yes, other than being hotter than hell in the summer (and even pretty hot during the day by late March), it is a great city to be a young person. Still, if he earned what he wanted in terms of college credits and really wants to be a pro, then he would be better off starting that career like Nate Reuvers decided to do after briefly having his name in the portal last offseason.