Chelsea have worked in defending with nine men - Mourinho

Chelsea's boss, Jose Mourinho, says his team have worked on defending with nine men ahead of today's game against Crystal Palace. 

Chelsea have conceded seven goals in their three league games so far this term, meaning Chelsea have failed to keep a clean sheet since their post-season win over Sydney FC in June.

"We have worked on a few things on defending in training, such as defending with nine men. We also worked on tactical aspects to improve the team. I didn’t just work the defenders, I worked the team because you have to defend as a team. You cannot blame defenders for goals conceded because a team is a team and good one defends as a team," he said.