Ben White impressed on his Arsenal debut in their preseason friendly defeat to Chelsea.
The England defender played the full second half and despite the result, Mikel Arteta was delighted with his new addition.
"I'm really pleased," the head coach said. "I think the club has shown the ambition and the direction that we want to take.
"It's a player we've been following for years now and we identify him as a great option for us, for our game model, for the balance that we want in the squad in terms of youth and the players who can still develop with us, so great recruitment."
