Ruud Gullit believes Ronald Koeman is coaxing better displays out of Ross Barkley through his harsh treatment.
Everton boss Ronald Koeman is attempting to "sting" Ross Barkley so he becomes a better player, according to Ruud Gullit.
Gullit played with Koeman at international level with Netherlands and took his coaching qualifications alongside his compatriot, who took over at Everton this season after two campaigns at Southampton.
Koeman's treatment of attacking midfielder Ross Barkley has been one of the club's main talking points in recent weeks, with the 22-year-old left on the bench for the draw with Manchester City on October 15.