German team, Vorwärts. The away leg was played, which Linfield lost 3–0. However, Vorwärts were denied visas to enter the UK to play the second leg, and (similarly to Glenavon the previous season) travelling to play the second leg in a neutral country was not financially viable for Linfield. They were therefore forced to withdraw from the competition. Linfield's most notable achievement in European competition to date is reaching the quarter-finals of the 1966–67 European Cup. After beating Aris of Luxembourg and Vålerenga of Norway they faced CSKA Red Flag of Bulgaria in the last eight. This resulted in a 2–2 draw at home and 1–0 defeat away. In the 1984–85 season, after overcoming Shamrock Rovers on away goals (the first and so far only series of meetings between the two Irish superpowers outside all-Ireland tournaments), Linfield faced eventual semi-finalists Panathinaikos in the second round. After a 2–1 defeat in Greece, Linfield raced into a 3–0 lead at half-time in the second leg at Windsor Park. However, Panathinaikos staged a remarkable comeback in the second half to level the match at 3–3 and eliminate Linfield 5–4 on aggregate. The 1993–94 UEFA Champions League saw Linfield drawn with Dinamo Tbilisi of Georgia. After losing 3–2 on aggregate, they were later reinstated when the Georgian side were expelled from the competition for alleged match fixing and bribing officials. Linfield faced Copenhagen in the first round proper. They won the first leg 3–0, but lost the second leg 4–0 after extra time. This proved costly, as victory would have meant a financially lucrative tie against eventual champions A.C. Milan in the next round. The club then had to wait seven years to participate in the competition again, due to the format of the two European competitions being altered. The league's relatively low ranking in the UEFA coefficient system has meant that the club has entered in the early qualifying rounds of either the UEFA Champions League or the UEFA Cup/Europa League, with the Blues becoming the first Irish League side to reach the play-off round of the Europa League in 2019. In the 2012–13 UEFA Champions League, the Blues entered the competition in the first qualifying round, and defeated B36 Tórshavn 4–3 on penalties to progress to the second qualifying round, after both legs ended as 0–0 draws. This was the first time since the 1984–85 season (excluding their opponent's expulsion in 1993–94)