But the Dutchman, who held talks with Conte at the training ground this week, said: “When you have the wrong approach, it’s easily done, being a sneak or undermining.
“I don’t know what happened before. But I asked them to look in the mirror and see if they’d been honest with themselves and delivered what they should have.
“Now, there have been changes. I see it in their dirty work.
“The players have shown an attitude of a high work-rate.”
On Conte, he added: “He is equipped and able, and he’s used to the pressure, which is always on in big clubs to get titles.”