When Liverpool met Real Madrid in the Champions League final in Kiev three years ago, it was a collision of two of the grand old names of the European Cup.
Real Madrid were crowned champions for the 14th time and 12 months later Liverpool claimed the title for the sixth time in their history, a number matched by Bayern Munich last year.
In Porto, on Saturday, comes a celebration of the new power in world football. Two historic clubs extending into new territory with new money. Manchester City against Chelsea, Emirati sovereign wealth fund plays Russian oligarch.
Perhaps the two richest members of the world's richest football league. So comfortably well off are they, in fact, that they were indifferent to the idea of the European Super League breakaway movement.
They only really joined in so as not to miss out and were the first to perform hasty reverse manoeuvres once the full scale of public outcry became clear.
Back within UEFA's fold and City's progress in particular is significant. They have overcome the Financial Fair Play (FFP) hurdles specifically designed to stop the upwardly mobile and ambitious.
These were rules brought into force in the wake of the Abramovich takeover at Stamford Bridge to stop what Arsene Wenger branded 'financial doping' rocking the established order at the top of the game.
For Manchester City, this was supposed to be the first season of a two-season ban imposed by UEFA in February last year for breaking FFP rules until the ban was overturned five months later on appeal.
City's lawyers beat UEFA's in the courts, just as Chelsea's beat FIFA's to cut short a transfer ban.
Since the pandemic struck, FFP restrictions have been eased by UEFA to help clubs through the crisis, offering those with bottomless sources of wealth an edge over rivals managing debts.
Chelsea launched a world-record transfer spree in the midst of the pandemic to recruit players including Timo Werner, Kai Havertz and Hakim Ziyech.
City have this year made Kevin De Bruyne the top-paid footballer in England on £385,000 a week.
They have the deepest, strongest, most complete squads in English football. And they are preparing to go back into the transfer market for reinforcements.
Both covet a striker, be it Erling Haaland, Romelu Lukaku or Harry Kane. City are focusing on a summer move for Jack Grealish.
Thomas Tuchel talks of hunting down Premier League champions City, closing the gap and it is not hard to envisage these two contesting the title at the end of next season.
They are strong and getting stronger and success in the Champions League will not only increase revenue from TV and prize money.
It will develop the brand and strengthen identity, adding lustre in a corporate market, spreading the word and enhancing global prestige.
Last year, Paris Saint-Germain, funded by Qatar's sovereign wealth fund, made it to their first final. RB Leipzig made the last four on the wings of Red Bull. PSG were back in the semis this year.
The old guard are not about to vanish. They will remain influential, hence the endless quest for new formats in the Champions League and breakaway plots.
They will fight for a place in the future. None of it is especially endearing in a sporting sense but the plates of power are shifting and the Porto final is the best example yet.
Two of football's great 21st Century forces will engage with City desperate to win their first Champions League title, Chelsea looking for their second and the grand old names looking on enviously.
emabkr42
516
let man city get this trophy 🙏🙏
Brightberry
494
Champions League final to make it Hat-trick..🔵🔵
PsalmistAyubaKakah
467
Man City have borrowed fans, Chelsea the real deal... 2 goals and clean sheet 4 Chelsea..Tuchel Nightmare for Guardiola
daddyliverpool
404
the Bluessss got 100% support from me . halahhhh Bluesssss .Fireeeeeeee
Anthony07014
403
SIDKAUSH
353
Chelsea will win it.#UPTHECHELS
RAJANSHARMA
340
City
D10S_LM10
266
All the best City. I would love to see Pep Guardiola lift another one..
timdnrsuy
178
city is going to destroy this noise makers tommorow. just as u lost the Fa cup so shall u lose moro#lets go city
Naeem4
161
Our Asian World Cup Qualification match🤣
Assi12
156
I can't wait for tomorrow
xyliver
124
10 years ago today, Pep Guardiola won his last UEFA Champions League title as Barcelona beat Manchester United at Wembley. It was a piece of art 🎨