Former PSG manager Unai Emery is the Arsenal new head coach.
Emery is very comfortable in working at clubs with clearly defined hierarchical structures. He enjoyed a successful time at Sevilla alongside the now much acclaimed sporting director Monchi.
Paris Saint-Germain hierarchy were already judging Emery before they has stabilized their new management structure.
It is clear Arsenal must avoid the short-termism errors made at PSG and build something for the long-run without the immediate guarantee of success.
If these conditions produce themselves, then Unai Emery can genuinely bring Arsenal back to their success.