The Unai Emery revolution is under way at Arsenal.
It's Unai Emery's first day of pre-season as the Arsenal manager today.
The Spaniard will take charge of pre-season training for the first time today, and it's a new start for the whole club after Arsene Wenger's departure.
As Emery will be in charge for the pre-season, players will be having to get used to a different plan, a different regime, a different way of training.