"I think I'm ready for the move to England," he said.
"It's every South American player's dream to play in Europe. It's impossible to turn down the opportunity when it arrives.
"I don't fear moving into English football. I'm not arriving as a star. I'm just a young player hoping to make progress.
"Liverpool are one of the best clubs in the world and any player would want to play there. It's sensational to know that Rafael Benitez has the confidence in me to sign me.