In association football, the manager is the person who has overall responsibility for the running of a football team. They have wide-ranging responsibilities, including selecting the team, choosing the tactics, recruiting and transferring players, negotiating player contracts, and speaking to the media. In professional football, a manager is usually appointed by and answerable to the club's board of directors, but at an amateur level the manager may have total responsibility for the running of a club.

Association football, commonly known as football, or soccer, is a team sport played between two teams of 11 players each, who primarily use their feet to propel a ball around a rectangular field called a pitch. The objective of the game is to score more goals than the opposing team by moving the ball beyond the goal line into a rectangular-framed goal defended by the opposing team. Traditionally, the game has been played over two 45-minute halves, for a total match time of 90 minutes. With an estimated 250 million players active in over 200 countries and territories, it is the world's most popular sport.