Thibaut Courtois has revealed Chelsea thought the defence of their Premier League title last season would be easy only for the Blues to endure a nightmare campaign.
Chelsea ended the 2014-15 season eight points clear of Manchester City at the summit of the table to claim their fifth top-flight title.
That comfortable cushion lulled the Blues squad into a false sense of security, Courtois told the Le Grand Debrief radio show, and resulted in them finishing 10th last season -- a massive 31 points adrift of champions Leicester City.
"Last season, we started a little bit too relaxed," Courtois said.