Chelsea manager Maurizio Sarri labelled his players mentally weak and "difficult to motivate" after losing 2-0 at Arsenal in a toothless performance on Saturday.
The Gunners blew the race for a top-four Premier League finish wide open as first-half goals from Alexandre Lacazette and Laurent Koscielny closed Arsenal and Manchester United, who beat Brighton earlier in the day, to within three points of Chelsea in fourth.