Arsenal can have some sympathy with Red Bull Salzburg.
Five years ago, in what remains their last appearance in the Champions League to date, the Gunners suffered a humiliating last-16 second leg defeat at the hands of Bayern Munich.
Already trailing 5-1 from the Allianz Arena, Arsenal lost by the same scoreline in the return meeting at the Emirates Stadium on March 7, 2017 to be eliminated 10-2 on aggregate.
Despite actually taking the lead in north London through Theo Walcott, the hosts capitulated after Laurent Koscielny's red card early in the second half as Robert Lewandowski, Arjen Robben, Douglas Costa and Arturo Vidal inflicted more misery on Arsene Wenger's side.
Whilst Arsenal may have been relieved to not be coming up against the Bundesliga giants in recent years, the two clubs could renew their Champions League rivalry next season.
As things stand, the Gunners are on course to seal a top-four finish in the Premier League and the reward should be a return to Europe's top table for the 2022/23 campaign. Although, Manchester United and West Ham United could hand Mikel Arteta's side a nightmare scenario.
With that said, part of the Spaniard's three-year master plan for Arsenal is on course to be completed within the next couple of months.
As revealed by Willian prior to putting pen-to-paper on a three-year deal at the Emirates Stadium in the summer of 2020, Arteta's mission has been to end the Gunners' absence from the Champions League and win it by 2023.
"One of the reasons I wanted a three-year deal was to be part of a plan, not just a player passing through," the Brazilian said, as per Sky Sports. "When I talked with the manager he told me why he needed me for three years.
"It was that he first wanted to qualify for the Champions League and win it by the time I left. That was what I wanted to hear."
Of course, Willian is no longer able to help Arteta complete this mission having joined Corithinans last summer and for this ambitious three-year plan to be successful in its entirety, Arsenal have to be in the Champions League next season to have a chance of winning it for the first time in their history.
Now, qualification is certainly a possibility, but Tuesday night highlighted what awaits the Gunners if they are back amongst the best teams in Europe.
Bayern Munich were in imperious form against Red Bull Salzburg, thrashing them 7-1 in the second leg - after being somewhat fortunate to leave Austria with a 1-1 draw three weeks ago - thanks to a performance that would have given many Arsenal supporters flashbacks of five years ago.
Lewandowski scored an 11-minute hat-trick, Thomas Muller netted a brace and Serge Gnabry was also on the scoresheet.
This was a statement of intent from the Bundesliga leaders as they look to regain the Champions League crown as well as a potential warning to Arsenal as there's every chance the two clubs' rivalry will come to the fore once again next season.
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As Bayern are on course to win their domestic league, they would be in Pot 1 for the group stage draw and could be paired with the Gunners who will be in pot 2 or lower having not been in the competition for the past five seasons.
Even if they are kept apart in the groups, more misery could await Arsenal in the knockout rounds.
Since the 2000/01 campaign, the sides have met 10 times in the competition - four of which have come at the last-16 stage and Bayern have emerged victorious in them all.
Judging by Tuesday night's performance, Bayern haven't lost a step since their last encounter with Arsenal and that's an ominous sign.
