Everton's Sandro Ramirez and Gylfi Sigurdsson look dejected after their defeat to Burnley on Sunday. Jason Cairnduff / Reuters
Everton's Sandro Ramirez and Gylfi Sigurdsson look dejected after their defeat to Burnley on Sunday. Jason Cairnduff / Reuters

Koeman's Everton continue to suffer due to lack of a set system