Everton’s Ronald Koeman says Roberto Martínez is ‘a really good talker’

• Martínez highlighted defensive frailties during a TV appearance
• Koeman also defends Ross Barkley’s ‘funny’ goal celebrationRonald Koeman has described Roberto Martínez as “a really good talker” who left him several problems to address at Everton this season.Martínez was a guest of Sky’s Goals on Sunday programme last weekend when he claimed to have witnessed the same defensive frailties in Everton’s 6-3 defeat of Bourne