"It's certainly among the best sides of all time. But so was the Milan side with (Franco) Baresi, (Carlo) Ancelotti, (Roberto) Donadoni and the Dutch players," said Sir Alex Ferguson, referring to the squad that Arrigo Sacchi coached to back-to-back European Cup titles in 1989 and 1990.
Few things from the footballing mind and mouth of Sir Alex Ferguson can be argued with. So when the Manchester United manager/legend acknowledges that Barcelona are undoubtedly amongst the best teams in the history of the beautiful game, one has to sit up and take notice.
Now having sat up and taken notice, and despite back-to-back draws—which in Barcelona's case is seen by some as a crisis—the team is looking as strong as ever. So it begs the question: why settle for being "among" the best when you can "be" the best?
That is the challenge. So, here are five reasons why Barcelona must win it all again.