"It was very clear to me that had I not gone to a club like Valencia, I wouldn't have left at all," he said.
"It's something that I wanted, I had two years left on my contract with Liverpool but this option came along and I had no doubts, it was my only option.
"It is a great club and for any professional it's a great opportunity to play there. This is a challenge for me and I want to win titles for Valencia.
"It was a big disappointment not to be included in the World Cup squad but I think signing for Valence has cured the wound."