The Denmark defender is recovering from knee surgery.
He told Villa's website "I want to make history in the No.5 for Villa. I want to add my name to the likes of (Paul) McGrath and (Martin) Laursen.
"I have watched videos of McGrath. He was superb. I have heard all the stories about his ability too - that he was one of the best ever in the game. I have heard he is a good guy off the pitch too.
"When he was on the pitch, it's clear to see that nothing was getting past him.
"The story I like about him is that he defended with everything - with his heart, showing real pride in his performance. That's very important."
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