Ehhhhhhh
He's a fat ways away from being viable as a starter on D. He's a fine 3pt shooter, but his volume is terrible and I doubt he can seamlessly raise that and be a efficient shooter.
Small guards who excel as starters in the NBA are a combination of highly cerebral and volume 3pt shooter. Sexton is neither.
This isn't hating, it's just being realistic about what he has shown this far. He can be a 16-18 ppg highly efficient scorer off the bench and that's great. Then you hope some team out there gets desperate down the road (may e this year,maybe next year) for a starting PG and overpays for Sexton based off him excelling in his perfect role, not overextending himself to be something he isn't. But you know Sexton isn't staying in Utah if he is not a starter.