Ashley Cole: A talent at left-back, Cole bid his farewell to angry Arsenal fans back in 2006, leaving Clichy and now Gibbs to do his job. Still considered one of the best in the business, he is struggling for form of late despite being praised as the best-ever left-back for England by caretaker manager Stuart Pearce. He may be at London rival Chelsea, but it would be nice to see him at the Emirates in red and white.
Thomas Vermaelen: We've all seen him. A huge talent in his position, it's difficult to cope without the vice-captain despite having to go as such more than is desirable. Since his arrival from Amsterdam, he has been a mainstay in Arsenal's current XI, and it is hard to imagine him being excluded from this list. Rock solid at the back, he has attacking abilities that has earned him the name "Verminator" and a number of goals in his time in England.
William Gallas: Cole goes to South London, Gallas goes to the opposite direction—and stays. Gallas, despite a short stature, can instill fear in the minds of the competition. He now plays at Tottenham (yes, I feel disgraced for including a "spud"), and he came to Arsenal as part of the deal to send Cole to Chelsea, which, in later years, was looked upon as a mistake by some.
Lauren: The right-back of the famous "Invincibles" who occasionally covered midfield. Need I say more? Many seasons with the Arsenal were characterized by injury, but that didn't stop him. He is still such a talent at fullback.