From The Guardian's match report, on Kevin Mirallas' sending off and what Martinez had to say about it:
[article]And the culpable Belgian really was Kevin Mirallas, not Lukaku. The winger had been booked for diving before he upended Cresswell. His arm was immediately raised in apology but it was not enough to spare him a second yellow card, or Everton an hour with 10 men. The Goodison faithful afforded the departing winger a generous ovation and blamed the referee, Anthony Taylor. So did Martínez, who identified a scapegoat for a setback.
“The second booking is a decision the referee has to make,” he admitted. “The first one is a ridiculous decision. Why should we book a player because we feel it is not a free-kick? I don’t feel he is a referee who understands the game in a way that we want it played.”[/article]
Martinez believes booking divers is wrong. I suppose that's why Deulofeu does shit like this: