Rangers will face either Inter Milan or Spanish side Getafe in the Europa League quarter-final if they can defeat Bayer Leverkusen in the last 16.
The Ibrox side trail 3-1 from the first leg and face a tough task in the return match in the BayArena next month.
But the prize for the victors is an attractive one.
The quarter-final tie will be one-legged and will take place in neutral Germany.
Duisburg, Dusseldorf, Gelsenkirchen and Cologne will be the host venues for the Europa League from the last-eight onwards, with the latter city hosting the final.
Leverkusen impressed in March's first leg at Ibrox, which was the last competitive match involving a Scottish side to take place before the coronavirus lockdown.
The second leg will be played behind closed doors on 5 or 6 August.
All remaining matches in this year's competition will take place in Germany.
Getafe's last-16 tie with Inter will take place as a one-off match.
Inter, Getafe, Rangers or Leverkusen will meet Wolfsburg, Shakhtar Donetsk, Eintracht Frankfurt or FC Basel in the one-legged semi-finals on 16 or 17 August, with the final on 21 August.
Rangers are scheduled to begin their Scottish Premiership campaign against Aberdeen at Pittodrie on 1 August after the 2019-20 campaign was curtailed because of Covid-19.
Leverkusen resumed their interrupted Bundesliga campaign in May and finished fifth. The new German season begins on 21 August.
Manchester United and Wolves could potentially meet in an all-English Europa League semi-final.
Ole Gunnar Solskjaer's side are all but through having won 5-0 at LASK in the first leg of their last-16 tie and United would face Copenhagen or Istanbul Basaksehir in the single-leg quarter-finals.
Wolves would play Roma or Sevilla in the quarter-finals if they overcome Olympiakos, who they drew 1-1 with in the first leg in Greece.
Should both English Premier League sides progress to the semi-finals, the pair would do battle in a mouth-watering clash to decide who makes the August 21 final.
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