I think many are missing the point when only talking about formations, player archetypes, and historical styles.
What every team 'needs' is the following:
Players who can contribute to the passing in midfield
Players who can get into the box
Players who can disrupt the lines of opposition teams
Players who can provide width
Players who can fill-in gaps in defence
Players who can retain possession
Players who can create chances
We're falling short in a lot of those areas, and many of the proposed purchases I'm seeing are failing to address them. Any players we buy or formations we play need to chosen in light of that.
(Sorry about the arrows, it's the only way I can think of to illustrate my point)
What we lack is adequate cover for Pogba, who's the only player we have who can make something happen.
With that in mind, what I would do is buy:
Savic
Fekir
Maybe a dm
Maybe a ballplaying rb
Maybe a ballplaying lb
Savic and Pogba like to drift wide and attack. Let those two give us our width. Yes we lack a controller in midfield, but that's not strictly necessary. Rather than having one player who makes 100 passes per match, we could just as effectively employ three midfielders who make 60 passes each per match.
Our forwards are all strikers. There's not a wide player among them, and certainly nobody who you could really on to make dangerous passes in dangerous areas. I'd buy Fekir to address that. Pogba/Savic behind would free everyone up to get into the box.
By having Pogba and Savic be the outlets on the wings (both are great crossers) the fullbacks would need to be good ballplayers who can step into midfield occasionally, but who DON'T need to be pseudo-wingers. I'd be happy enough with Lindelof and Tuanzebe there, but wouldn't be averse to new signings.
We're a team of technical giants. Asking for high pressing is unrealistic. Building a solid base with defined roles is the best way to go, in my opinion.