Under the leadership of Wattez, the club adopted a new official name – Union Sportive Boulogne Côte d'Opale – in July 1994. as a new company, the debts of the club were wiped and Boulogne – although still struggling in Division Four – reached the last sixteen of the Coupe de France again in 1997–98. They earned a home tie against Ligue 1 side Olympique de Marseille, losing 1–0.
Under Wattez's leadership, Boulogne changed its name to Union Sportive Boulogne Côte d'Opale in July 1994. The club was able to eliminate its debts and advance to the Coupe de France knockout stage again in 1997–98 despite still being in Division Four. They played Olympique de Marseille, a Ligue 1 team, at home but lost 1–0.