The phrase "mouth-watering clash" is often used to describe an exciting or highly anticipated event, especially in the world of sports. But there are plenty of other words and phrases that can be used to convey the same meaning. For example, you might describe the upcoming match as a "showdown," a "battle," or a "head-to-head competition." Other options might include "epic encounter," "high-stakes showdown," or "thrilling contest." Whatever words you choose, the key is to capture the intensity and excitement of the event, and to make it clear that this is a game or competition that people will not want to miss.