 Complete the following phrase:  United opened the 196970 campaign by winning the Charity Shield with a 21 win over Manchester City, and went on to face realistic possibility of winning the treble  the league, FA Cup and European Cup. However they missed out on all three trophies as the games built up towards the end of the season, and the league title was the first to slip out of their hands as Everton went on to build an insurmountable lead. They then bowed out of the European Cup after a 31 aggregate defeat to Celtic, including a 21 loss at Hampden Park in front of a UEFA record crowd of 136,505. They took two replays to overcome Manchester United in the FA Cup semi-finals Bremner scored the only goal in 300 minutes of football, but lost 21 in 