After finishing second in the French national youth football trials in 1949, Kopa began his professional career at age 17 with Angers in Ligue 2 and was transferred two years later to Reims, with whom he won French championships in 1953 and 1955. He won the 1953 Latin Cup with Reims, where they defeated Milan 3–0 in the final, and helped them reach the 1956 European Cup Final, which the team lost to Alfredo Di Stéfano's Real Madrid, 4–3.