Maurizio Sarri admitted he is worried about his Chelsea team's "mentality" after they fell to a 2-0 defeat at Everton that severely damages their hopes of a top-four finish in the Premier League.

Richarlison and Gylfi Sigurdsson, converting his own saved penalty, scored the second-half goals at Goodison Park on Sunday that halted Chelsea's recent league improvements and marked Everton's first win over 'Big Six' opposition in 26 games, a run dating back to January 2017. But the goals followed a first half of utter Chelsea domination in which they somehow failed to beat Everton's England goalkeeper Jordan Pickford and the subsequent collapse has clearly concerned the London club's manager.