The phrase "to wear the armband" means to hold a position of leadership or responsibility, typically in a team or organization. It refers to the practice of wearing a distinctive armband as a symbol of authority or captainship. Full definition
Ashley Williams started the competition wearing the armband for Wales, but looks likely to miss out on the crucial match with the Red Devils due to injury. (justarsenal.com)
Milner being named captain seems to suggest that Gary Cahill, who wore the armband in Berlin, will not be in tonight's starting XI. (fanatix.com)
And if not, who would you like to see wearing the armband next year? (justarsenal.com)