I still think Bernardo as a false 9 can work (not a true striker, false 9 specifically), but not in our system.
Messi False 9 at Barca for example only works (first obviously because its Messi) but also because the wingers played inverted or inside, with fullbacks providing width. False 9 requires you to burden the wingers with more goals, with the advantage of the striker essentially acting as a 10.
We require our wingers to play mostly wide though, so it doesn't work because then we lack a goal threat up front.
That being said, we have Aguero and Jesus, so false 9 is also not necessary for us anyways.