 Complete the following phrase:  In 2003, Celtic became the first Scottish club since Dundee United in 1987 to reach a European final, eventually losing 32 to Porto after extra time in the UEFA Cup final. In 200304, two Scottish clubs, Celtic and Rangers, qualified for the UEFA Champions League for the first time. In 200506, Rangers became the first Scottish club to reach the knockout stage of the Champions League, a feat repeated by Celtic the following two seasons. In the 200708 season, three Scottish clubs were competing in Europe after Christmas for the first time since 1970, while in the same season, Rangers reached the 