I don't know which is the best formation for these players, Arteta will know that better than anyone. But it's cool that we have four players down the spine of the team that i'm very content with: Leno, Gabriel, Partey and Auba. All four pretty much fit the profile of what you'd want from a modern PL footballer.
Whatever the formation is hopefully we can build around that spine.
Whatever the formation is hopefully we can build around that spine.