I don't rate him super high, but he's certainly a good player.
The guy has been an irreplaceable fixture in the PSG starting XI for 5 years now, playing over 3000 minutes or more every single season, starting every single one of their CL games, and in general improving year by year. He's also been a full-time starter for France for the last 2 major international tournaments. He's a strong tackler and good at breaking up play with his endless energy, passes at around a 90% completion rate even if he isn't the most technically gifted, finishes each season with about 5 goals-5 assists.
All that says a good player. Hopefully he can perform even better here.