I agree with you,
Kante is so limited offensively it would hurt us in the CL. He can't play in tight spaces, doesn't have the technique. As we saw against Bayern, we struggled against them due to Pogba being the only midfielder who could keep the ball in high pressure moments. Bringing in Kante gives this team nothing, matter of fact we'll just be one man down in attack. His passing is limited as well.
Kante works well for a Leicester team thriving on having 42 % ball possession through an entire season, not for this Juventus team excpected to dominate 95 % of their games with goals and flair. We need more technical abilities in this squad.
Look at the holding midfielders for the best teams out there, they all have an offensive repertoire; Barca got Busquets (great in tight spaces and can pass), Vidal and Alonso for Bayern, PSG have Motta and Verratti, the Atletico boys are mad technical, Casemiro is an underrated passer for Real etc.
Kante's qualities are great for that Leicester side, not this Juventus.