I actually think this back 3...
Shaw - Maguire - Varane
...would be perfect on paper.
You then throw in the fact it allows us to play Pogba and Bruno in a midfield that wouldn’t fall apart structurally due to the solidity behind them, as well as having Ronaldo and Greenwood play as strikers who can operate in their favoured positions on the pitch (left-hand and right-hand channels), and it starts to look very attractive. Having Greenwood closer to Ronaldo would help them both as Ronaldo wouldn’t be left isolated with two CB’s in the manner he has been in recent games and Greenwood would be positioned even closer to goal.
I also really like the idea of Shaw being able to step up out of defence in a more central area to help support the midfield.
Ronaldo - Greenwood
Bruno
LWB - Fred - Pogba - RWB
Shaw - Maguire - Varane
De Gea
The idea falls apart, however, when you consider our options for the wing-back position and the fact we’d be potentially relegating Rashford
and Sancho to the bench in favour of Telles and AWB. We could potentially play one, preferably Rashford due to his pace and physique, in the wing-back slot in the manner that Tuchel does with CHO but it feels forced. And given it would be AWB on the opposite flank it would, I feel, just turn into a lop-sided 4-2-3-1 anyways.
If we had signed Hakimi in the summer then I think this idea would be a runner, especially if we followed that up with Tchouaméni in January. We could rotate Shaw and Rashford in the LWB role as well, depending on the opposition, by playing Lindelof in the tougher games.
Ronaldo - Greenwood
Bruno
Rashford - Pogba - Tchouaméni - Hakimi
Shaw - Maguire - Varane
De Gea
Nonetheless, AWB’s limitations on the ball, and the signing of Sancho, make this idea ultimately unfeasible. Wan-Bissaka I still think can be easily upgraded upon but we should really be looking to incorporate Sancho fully and so a system that suits him, rather than excludes him, is the one to go for.
How you do that while simultaneously including Ronaldo, Bruno, and Pogba in their best positions is the question that will ultimately decide Ole’s future. There’s no easy answer and the painful absence of a proper CDM in the squad just confounds the issue.