The way to look at Myles Turner is that he is a great option if he is your 4th best player.
If he is your 3rd best player, your top 2 guys need to be MVP candidates like Shaq & Kobe or LeBron & AD which is not the case for Charlotte. Their top two players are LaMelo (All-Star) and Hayward (borderline All-Star) who would be leaving in this deal so Terry Rozier (middle of the pack starter) or Turner (above average starter) would be the new 2nd best player.
Which brings us to Turner as your 2nd best player which means your team sucks. He is nowhere near good enough to be that.
Charlotte going all-in on Turner would be a terrible move for them. Now if they can get him cheap and slot in alongside LaMelo, Hayward, Rozier and Bridges then you are onto something. Heck you could even move Bridges for him and replace Bridges with PJ Washington if you did not want to pay Bridges but ideally you'd pay Bridges and keep that group together.