Emery was using Mkhi Iwobi mostly too but we had Ramsey who was extra attacker going forward at the moment our midfield is just average we have no runner who could score or assist I'm very happy he decided to change that and put saka in advance position and ESR introduced to team they suddenly made us more better going forward. With Partey back fit and signing creative playmaker our team in 2nd half of season will be fun to watch.Arteta played Willian mostly in wide areas. So his idea was to create from the wings (his comments about crossing and all that), just like Emery. Which I think is a very restrictive approach and teams figured out quite quickly to stop that.