The 1964–65 season saw West Ham playing in both the 1964 Charity Shield and in European football having won the previous year's FA Cup. West Ham and 1963–64 league champions, Liverpool, shared the Charity Shield having drawn the game at Anfield, 2–2 with Byrne scoring one of the West Ham goals. In Europe West Ham competed in the 1964–65 European Cup Winners' Cup. Byrne scored in the first round against La Gantoise, the third round against Lausanne and a goal in the semi-finals against Real Zaragoza. Unfortunately, for Byrne, he was injured in the England-Scotland match a few weeks earlier and did not play in the final against Munich 1860 at Wembley Stadium which West Ham won 2–0
