#4 4-1-3-2
This is a ridiculously attacking formation which Sampaoli has used before and with the talent at his disposal, he could do it again. A 4-1-3-2, which looks like a 2-3-3-2 in possession, can free up both Aguero and Higuain without having to smother Messi.
Mascherano can be the defensive midfielder as the two wingers Lanzini and Di Maria push forward. Sampaoli deployed this formation against Singapore in a friendly and it was astonishing to watch.
The two center-backs and Mascherano will be the only defensive players as even the full-backs pile up in attack. Obviously, this will leave them hugely susceptible to counter-attacks. Does this tactic cross the line between boldness and stupidity? Only time will tell.