Celtic F.C. is a professional soccer team.
The 1966 -- 67 Scottish Cup was the 82nd season of Scotland 's most prestigious football knockout competition . Association football , more commonly known as football or soccer , is a team sport played between two teams of eleven players with a spherical ball . Celtic F.C. . The club 's greatest season was 1966 -- 67 , when Celtic became the first British team to win the European Cup , also winning the Scottish league championship , the Scottish Cup , the League Cup , and the Glasgow Cup . Rangers Football Club are a football club in Glasgow , Scotland , which plays in the Scottish Premiership , the first tier of the Scottish Professional Football League .