"Prendre la balle au bond" is a French idiom which means to take advantage of an opportunity or seize the moment. There are several ways to express this in English, such as "seize the opportunity," "strike while the iron is hot," or "make the most of a situation." Another option is to use the phrase "carpe diem," which literally means "seize the day." In a business context, "capitalize on an opportunity" or "act decisively" could be used. Regardless of the phrasing, the sentiment remains the same - when an opportunity arises, it's important to act quickly and decisively to make the most of it.