notable examples being Kenny Dalglish (sold from Celtic to Liverpool in 1977), Gordon Strachan (sold from Aberdeen to Manchester United in 1984) and Frank McAvennie (sold from St Mirren to West Ham United in 1985). What came popularly to be termed the "Souness Revolution" began with a string of major signings from English clubs. Significantly, this reversed the historic pattern of Scotland's most able footballers playing in England. His first signings included Terry Butcher, captain of Ipswich Town and an established England international, and Chris Woods of Norwich City, England's second-choice goalkeeper. Subsequent seasons saw the arrival of other English internationals, such as Trevor Steven, Gary Stevens, Trevor Francis and Ray Wilkins. Souness was able to offer the lure of European club competition, at a time – 1985–1990 – when English clubs were banned from Europe in the wake of the Heysel Stadium disaster. Rangers profited from this by embarking upon a signing policy which drew on their relative wealth to compete, for the first time, directly with England's most powerful clubs. Souness revitalised Rangers quickly began to dominate Scottish football. In his first season, 1986–87, they won the Championship and the League Cup, defeating Celtic 2–1 in the final. They retained the League Cup in 1987–88, defeating Aberdeen on penalties after extra-time, although they surrendered their league title to Celtic. Two more Championships were to follow, this time in successive seasons (1988–89 and 1989–90), and a further two League Cup victories, over Aberdeen 3–2 in 1988–89 and Celtic 2–1 (after extra time) in 1990–91. In April 1991, Rangers were in the process of winning a fourth league title in five seasons when Souness left Rangers to take over as manager of Liverpool. He was replaced by his assistant Walter Smith four matches prior to the end of what was to become another championship-winning season. Rangers went on to win six further league titles in succession, as well as a string of domestic cups, under Smith's management. Although Souness had been hugely successful in his time at Ibrox, his time in charge had not been without controversy. His most noteworthy act was the signing of Mo Johnston in 1989. Rangers, historically a team supported by Protestants, had for most of the 20th century a policy of refusing to sign Roman Catholics. Although there had been many Rangers players of Catholic faith, particularly before the sectarian divisions hardened after World War