Arsenal boss Arsene Wenger says his summer signings have changed the atmosphere inside the locker room.
According to Wenger, the experience of that quintet altered the mindset in the Arsenal camp.
"I am adamant that the players we brought in during the summer are top quality," the Frenchman told Arsenal Player.
"They are also top quality men who have brought something to the dressing room - that is vital. They all have ambition and you could see that straight away after two or three days when the whole dynamic changed."