I'd go one further and copy the 3-2-5-1 Pep is playing as it solves many of the dilemmas we currently have.
-----------------Jesus
Martinelli-Trossard-Odegaard-Saka
--------Xhaka/Zinch--Partey
--Gabriel---Kiwior/Saliba---White
--------------Ramsdale
Allows us to play Trossard and all of our other attackers.
Removes the need to invert the fullback as you have a square in the middle at all times.
Removes Zinchenko from the defence.
Allows us to sell Tierney without needing to replace him, and also relieves us from needing to sign a RB.
We can sign more CB's which are easier to find and in abundance.
Reduces the attacking burden on Xhaka whilst still keeping him away from the dreaded 6 zone.
Gives Partey some support who has been at sea recently.
I wonder if it requires too much of the defenders, though.