"Ronaldinho is a great guy and a good friend of mine, but no two players are the same - Ronaldinho is Ronaldinho and Anderson is Anderson.
"It's an honour to play alongside him, it's something every footballer in the world would like to do. He's a great player and I hope one day I can reach the level he is at now.
"I feel very proud by those comparisons but you have to remember that Ronaldinho is an established top-class footballer who has been named the best player in the world twice.
"I'm good friends with Cristiano and he told me about the club and what a great place it is. Joining United is a dream come true for any footballer in the world. I'm really excited to be here and hope I can do well.
"I heard about it [United's interest] some time ago through my agent but we thought it would be better for me to wait a little bit longer. I was doing well at Porto at the time and I knew that joining a club like United - one of the biggest clubs in the world with one of the best followings in the world - would bring its own pressure.
"But when they expressed an interest in me again in the summer I felt it was the right time and I was really excited to have the opportunity to play for such a great club."