I don't know, I have seen he's a decent enough passer and he's got solid assist numbers. But like I said, I've only read not watched.
Ultimately, in the modern insane transfer market, I'm not upset about spending 20ish million quid for a 24 year with 187 appearances for Juventus and 46 caps for a top level national team like Uruguay. You don't play that much for high-level sides by accident and we're not paying much. When we signed Ndombele and Lo Celso (who are both older the Bentancur) for 2x and nearly 3x the price, neither of them had even 90 first division European appearances, at much lesser clubs than Juve.
We obviously still need an elite midfielder in the summer, but for January Bentancur seems decent enough, it's a reasonable price for a player with a lot of experience who is only 24.
Juve need to sell considering they spent money they don't have on Vlahovic. They are still trying to make Superleague work they are so desperate for money. I also don't really care what Juve fans are saying about Kulu or Bentancur, they've been wildly spoiled over the last decade and very whiny in their first moment of struggle.