You are kind of right but in terms of offensive contribution massively wrong. Kante didn't touch the ball in our our box, and Sissoko touched it once in their box, well it was on the line of the outer corner of their box. But ing terms of who contributed more in terms of attack Kante pisses it - despite playing as the lone defensive pivot in their 433 with two 8's either side.
Kante successfully received the ball 21 times in our defensive third.
Moussa Sissoko successfully received it 2 times in theirs.
Kante completed 67 passes, 21 in the attacking third, 39 middle, 14 backwards, 24 square, 29 forwards
Sissoko completed 20 passes, 2 in the attacking third, 12 in the middle, 12 backwards, 4 square and 4 forwards in 94 minutes.
Defensively
Kante 3 tackles, 1 interception, 17 pressures, 6 successful
Sissoko 0 tackles, 0 interceptions, 11 pressures, 3 succesful
With regards to your previous notion that we'd have to spend 90m to upgrade him. There are players playing for clubs at the bottom of this league and throughout it that could offer physicality, carry out simple defensive remits, but also an improvement in what they could offer interns of "football". I don't overly rate Berge for example, but if we just wanted a "unit" who could fill space between the CB/FB but then also play some football and be a modicum more press resistant on the ball he's at the bottom club. Anguissa same (2nd bottom), Bissouma, Phillips, Rice, McGinn, Allan, Dacoure, Neves, Romeu, Ndidi, Mendy,
Most of those aren't world beaters who cost much, and I'm not saying I wan't us sign all or even any of them, I'm just saying we wouldn't have to spend a fortune to find a player who could be a space filler in Mourinho's bus park system who could also offer a modicum more football.