Pistone has not travelled to Spain, while Villarreal goalkeeper Mariano Barbosa has stoked the fires ahead of the Champions League qualifier by branding Everton " a bunch of animals."
The 21-year-old Argentine claims he was buffetted by the Blues in the first leg a fortnight ago and quickly realised it was a case of "kill or be killed." He also criticised Everton's fans.
Barbosa said: "I have never been beaten up as badly as by Everton - not even when I was in the playground at school. My head was cut open and I was left swearing.
"After the game my entire body ached. My shin, my chest, my thigh - you name it and it hurt.
"I came out to make a catch in the first-half and I was hit with a terrible blow. That got me angry and I then realised it was a case of kill or be killed.
"But I had to be careful about it. Their supporters were very gentle - I don't think.
"They swore at me a lot, although I could understand very little of it. I saw them doing something strange, making V-signs with their fingers and I asked: 'Are they looking for peace and love?'
"Diego Forlan, who used to play for Manchester United, explained that they were saying 'F**k you' to us. They used their middle finger, the way we do, and their index finger.
"The second leg is going to be a battle - and I am going to get stuck in. I have no other option. Everton are a bunch of animals, they are not worth a thing."
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