F.C. Barcelona Football Formation

Lineup (3-4-3)

Something L.Enrique might play , having 3 players back at all times would provide safety at the back , Cuadrado and Alba are moving up and down the pitch as attack progresses .Attack is dynamic since all 3 players can play in different positions and they're dangerous dribblers and finishers. While defending Neymar and Aguero would apply most pressure on opponents , while Messi and someone from midfield would pressure them slightly. Cuadrado , Alba can easily be pulled back in back 4 while Busquets would move in midfield to turn formation back to 4-3-3 , something that Pep used to do in last 2 seasons at Barca.
If they need plan B they can easily move Cuadrado to right wing , put Montoya on RB , Mascherano and Busquets would swap positions as well as Iniesta and Rafinha. Aguero and Neymar would be benched for Llorente and Montoya .
Cuadrado and Messi behind Llorente would provide dribbling and outside shooting while Llorente is target man , Rafinha and Mascherano instead of Iniesta and Busquets provide much needed dynamic in Barca midfield , more running and pressure needed to compete in football of today .