I like Thybulle. I really love his defense, and think If his offense can improve to average he'll be great.
With that bias in mind I looked at his stats to see if I could see some trend that would give a glimmer of hope for his offense. The only thing I saw is that his FT% jumped a ton last year up to 79%. He also took the ball inside more last year where he was a decently efficient.
Here's the bad. He's a 28% 3pt shooter from wide open, and most of his shots are wide open. It's actually better to not guard him. He would destroy spacing. I just don't think you can have a guy that shoots that bad on wide open shots playing major minutes next to Gobert.