Rangers will face either Inter Milan or Getafe in a one-legged Europa League quarter-final if they can overturn their tie with Bayer Leverkusen.
The Ibrox side trail the Germans 3-1 following March's first leg in Glasgow, which was the last competitive match involving a Scottish side to take place before the coronavirus lockdown.
The second leg behind closed doors at Bayarena will be at 17:55 on 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 at 20:00 on 5 August.
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.
Steven Gerrard's side 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 season begins on 21 August.
Rangers faced Scottish Premiership rivals Hamilton Academical in a behind closed doors friendly at their training ground on Friday and won 2-1, with new signing Calvin Bassey and last season's top scorer Alfredo Morelos on target and Ronan Hughes netting for Accies.
Gerrard's team next face friendly opponents Lyon and Nice in France on 16 and 18 July before hosting Motherwell and Coventry City on 22 and 25 July.
"It's a long time not to play football," Gerrard told RangersTV after the Hamilton match.
"We've got some real valuable minutes into the players' legs.
It was a really good workout.
Hamilton were very professional and made us work for the win.
"The win's not important today, it's more important getting players through the first game.
I'm pleased with a lot of it but there's still a lot of work to do.