In the modern game, wing-backs are in high demand.
Playing with five at the back and using lung busting wing-backs is very much in vogue right now.
This season Chelsea, Juventus and Monaco have all used their wing-backs to great effect, catapulting them to the top of their respective leagues.
But what makes the perfect wing-back? Copa90‘s video below attempts to give us an answer.
Who do you think is the best wing-back in the world?