Celtic's third round UEFA cup opponents were Celta Vigo. In the first leg, Henrik Larsson scored the only goal of the game in Glasgow to give Celtic a slender 1–0 advantage to take to Spain. The match was overshadowed by the eccentric refereeing of Claude Columbo, who sent Celtic's Martin O'Neill from the home dugout during the game. O'Neill received a two-game touchline ban, but this was later reduced to a one match ban after an appeal.
