Pep Guardiola visits Nou Camp for only the second time since he left Barcelona in 2012. Further embarrassment likely awaits, but how can City escape, and manage against the heavyweights?
Juventus play against Sevilla at the Juventus stadium, and Allegri is under immense pressure to win the group this year, after the club finished second last season and paid the consequences by drawing Bayern in the next round.
The UCL draw revealed the destiny of some of the competing clubs, as some cherished their luck, while others blasted theirs.
Leicester City's title run last year was no fluke. But hoping they can repeat it might be a bit of a stretch, even for those who love Disney. Plus, how will they fare in the promised land of the UCL?
A new twist to determine the greatest of all time, between Messi and Ronaldo.
It's been surprising to see Man City do well in Europe. Could their dreams take them to the Final?
Chelsea's season has been so poor that even the dictionary can't define it. How has the London-based club done this bad?
It's the million dollar question: Why is club football's best competition played during the week when many can't watch them?