Losing William Saliba doesn’t just remove a centre-back from Arsenal’s XI; it disrupts the entire tactical ecosystem Mikel Arteta has built around his pace, composure and dominance in duels. To fill that void, Arsenal can’t simply “plug in another defender” and hope for the best. They have to rethink their defensive structure, build new compensations in midfield, and rewire their build-up patterns so the system stays robust even without its most important individual defender. Saliba’s role under Arteta goes far beyond conventional defending. He is the anchor of Arsenal’s high line, the player who allows the team to compress the pitch without constantly worrying about balls in behind. His recovery speed buys time and space for an aggressive press, and his calmness on the ball gives the team confidence to play through pressure in the first phase. When he steps out of the line to confront a striker, the rest of the team can squeeze up, knowing he rarely gets rolled or beaten in open duels...
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