The Barcelona team of 2010-11 will rightly go down as one of the greatest in football history.
The simple fact that Sir Alex Ferguson considered it the most formidable side he faced is evidence enough, but the football they played on the way to Champions League glory was simply incredible.
Under the management of Pep Guardiola, the Blaugrana delivered an astonishing brand of football with Xavi, Andres Iniesta and Sergio Busquets producing remarkable passages of 'tiki taka.'
They were - of course - confidently shored up by a back five of Victor Valdes, Eric Abidal, Gerard Pique, Carles Puyol and Dani Alves.
And then the piece de resistance came up front with the ever underrated duo of Pedro and David Villa flanking the indomitable Lionel Messi.
2010-11 Barcelona side
It might not have been the most glamorous Barcelona side in the absence of Samuel Eto'o, Ronaldinho and Thierry Henry but their football was never finer than in 2010-11.
They made no exceptions with the Champions League final either, romping their way to a perfect 3-1 victory under the Wembley arch with all three forwards finding the net.
Highlights of their performance have been spreading across social media for no less than seven years now and their incredible passing football will never get old.
Barcelona's rondo video emerges
However, one particular video from that day in London has resurfaced once again and it's one that football fans won't have seen for a long time.
That's because it comes from Barcelona's warm-up and their trademark 'rondo' drill before the game.
Featuring some of the team's finest players, their incredible passing football was even apparent in their practice and the number of skilful flicks is remarkable.
It's no surprise then, that the video has once again garnered 9,000 'likes' on Twitter. That considered, check out the clip down below:
What. A. Team.
Whatever Guardiola was teaching them in Catalunya, he managed to drill his team into playing some of the most intelligent football of the 21st Century and the players had a superb understanding.
There's just something telepathic about the passing between the players that's clearly indicative of hours upon hours of training.
That performance in Wembley would endure as Barcelona's magnum opus and while success has followed since, they've never reached that level of performance again.
Besides, Ferguson remarked after the game: "They're the best in Europe, no question about that. In my time as a manager, I would say they're the best team we've faced.
"Everyone acknowledges that and I accept that. It's not easy when you've been well beaten like that to think another way. No one has given us a hiding like that.
"It's a great moment for them. They deserve it because they play the right way and enjoy their football."
From everything down to the warm-up drill, it didn't and might never get better than 2011 Barcelona.
What do you think is the greatest football team in history? Have your say in the comments section below.