Okore has played alongside Agger for the Denmark national team.
The Liverpool defender told Okore that he is ready-made for the English game.
"I talk to him about it but we haven't really talk that much and I'm hoping we can get talking before we start the season," Okore told Villa's website.
"I have talked to him a little bit about the Premier League and how tough it is to play but he thinks I've got the skill set for making it in this league.
"I do to so that is the only thing that is on my mind.
"I am really looking forward to playing and getting this going and getting the fans inside to see me."