Predicting which version of Arsenal will turn up on a weekly basis has proved difficult during Mikel Arteta's two-year reign.
But since returning to the Emirates as manager in 2019, the Spaniard has begun what is nothing short of a revolution among the playing staff, replacing the old with the new.
Mesut Ozil and Sokratis, both 33, and 34-year-old David Luiz have departed. Willian, 33, was signed and then let go 12 months later. Alexandre Lacazette, 30, and Pierre-Emerick Aubameyang, 32, could yet follow, perhaps as soon as January.