What should a referee do in the event of a coach failing to leave the field on request?

When a coach fails to leave the field after being instructed to do so, the appropriate action for the referee is to terminate the game. This course of action is justified because the coach's noncompliance can undermine the authority of the referee and the integrity of the match. The rules of soccer establish that the referee has the ultimate authority on the field, and allowing a coach to remain could lead to further disruptions or conflicts.

Terminating the game ensures that the situation is resolved immediately, maintaining control of the event. This decision is not made lightly, as it has significant implications for both teams. However, the enforcement of rules is essential for upholding the sport's standards and ensuring safety and fairness for all participants. This decisive action also sends a clear message regarding the seriousness of the issue at hand.

While discussing the matter after the game, delaying action until the game's conclusion, or issuing a formal warning may seem viable, these options would allow the disruptive behavior to continue, potentially affecting the teams and the overall match experience. It is crucial for the referee to act swiftly and appropriately in these situations to maintain order.