It all depends on how well he does the bread and butter stuff. If he does the simple stuff on the ball we'll then he would be a serious contender to start alongside Varane. And why I say that is because his physical and athletic capabilities, could potentially allow us to implement a high press more effectively due to his ability to defend/cover a large space. Maguire and Lindelof aren't the best at defending a large space.
And if we look at Liverpool, they're a team who can transition from a compact low/mid or compact high block. And they can do that because they have a keeper who is proactive, as well as being capable of sweeping up. They have CBs who are all technically competent, as well as being strong in the air and on the ground defending a large space in 1v1 situations. Midfielders who are again technically competent, tenacious and mobile, which in tandem with the CBs and Keeper, provides the platform for the fullbacks and forwards to thrive in the offensive transition, as well as apply a effective high press due to the CBs and midfielders compressing the vacated space, which makes it difficult for the opponent to find a out ball.
The profile of player they're targeting is obvious imo. Players who are technical (first touch/ball control) as a default setting. And then the attributes follow, attributes like being quick, athletic, tenacious etc, which helps them to control the game both offensively and in defensive transitions because almost every single one of their players is difficult to bypass in a high line. And they can also comfortably transition to defending in a collective approach.
So even though Akanji wouldn't be my first choice, signing a player of his profile provides a coach tactical flexibility, rather than the low/mid block approach we've seen in the last 10 years. I would prefer us to sign Gvardiol, but we're in a situation now where other positions in the team are of a higher priority. So if we can sign someone like Akanji for a reasonable price then I'm all for it.
I'll throw the below in here for anyone that wants to know more about 20 year old Josko Gvardiol.