“Football, as Sir Alex Ferguson noted last week, moves in cycles. He was talking about clubs and nations, about how certain places suddenly produce a great generation of players, but it is true as well of formations and styles of play. After the rise of 4–2–3–1 to replace 4–4–2 as the world’s default, the backlash is well and truly under way. As so often, the key lies on the flanks. The history of football tactics is, to a large extent, the search for space and when the centre is crowded it is on the less crowded wings that the key battles are fought.” Guardian – Jonathan Wilson