Kante is the best in the world at what he does, Pogba is one of the best in the world at what he does, but what Pogba brings is what we we've been crying out for; creativity, flair, and one of the most important things, probably something we haven't properly had since an in-prime Scholes, a runner from midfield, someone who can chip in with a double figure return each season.
Kante at this stage would be more of a want than a need.
Ander Herrera does a pretty similar job for us, not quite to the freakish levels of Kante, but to a high level.