Are you trolling? You're trolling right?
UCLA (thanks to John Wooden) is and always will be considered a "mecca" of college basketball man. I mean I'd say Barnes has a soft spot for UNC too, but I feel like him being such a student/historian of the game UCLA was the #1 spot. He grew up in the Wooden era watching UCLA and was in college playing as Wooden retired.
I'm not saying Indiana isn't a top tier job, it is. But based on what Barnes himself has said in interviews seems like the only job he'd seriously consider leaving TN for was UCLA, and they came for him with the full bag. I doubt that "perfect storm" will happen again and expect he'll retire here.