Downfall of Chelsea

It's been been said that chelsea was one of the best football team in the english league. But yesterday it was proven all wrong by our well gallant Manchester city.
The game started well but only to discover a 4-0 win for mancity in the first half and a 2-0 win in the second half, which makes it a total of 6-0.
Some people said the reason of this win was beacuse of the retutn of mancity star Sane.
Let see if chelsea can stand well in their next game.