Arsenal goalkeeper Petr Cech is surprised by Chelsea's struggles this season.

Chelsea crashed out of the Champions League at the hands of Barcelona last week and they are currently fifth in the Premier League.

"Well it's very hard to tell you know," he told the BBC.

“The team has stayed more or less together obviously and the manager stayed there and he got the chance.

“When you win the league in your first season it's the best possible start because obviously people get to trust you.

“I think you make yourself a name and the players know you, the continuity can be there.

“So sometimes it is very surprising when the odd season goes completely wrong.

“It might be just the fact that something goes slightly different and you try to think too much about it and then once you get in a few bad results on the spin it can change the confidence of the team."