Towards the end of the 1970s the financial burden of stadium redevelopment started to impact the ability of Rangers, now managed by their long-serving captain John Greig, to maintain a strong team, and while Celtic remained a force, albeit no longer at the level of a decade earlier, Alex Ferguson's Aberdeen and Jim McLean's Dundee United took advantage of the comparative weaknesses in Glasgow to win four championships, four Scottish Cups and three League Cups between them during the period from 1979 to 1987. They also succeeded internationally: Aberdeen won the 1983 European Cup Winners' Cup Final and Dundee United reached the 1987 UEFA Cup Final. The other titles in that period went to Celtic, who switched manager from McNeill to David Hay in 1983, while Hearts came within a few minutes of a rare title in 1985–86. After an unsuccessful return for Jock Wallace, Rangers' revival began in the summer of 1986, when chairman David Holmes appointed Graeme Souness as player-manager, with several prominent English players soon following him to Ibrox with their clubs banned from European competitions following the 1985 Heysel disaster. A first title in nine years came Rangers' way in 1986–87, although Celtic won a double in their centenary season, 1987–88, again led by Billy McNeill.