The Spaniard claims Liverpool's broken promises were to blame for his decision to move within the Premiership.
The striker has now defended Monday's move and indicated the sales of Xabi Alonso to Real Madrid and Javier Mascherano to Barcelona - under previous owners George Gillett and Tom Hicks - were key factors.
"I said that at that moment, I didn't think I would play for another club - because at that moment Liverpool were giving me what they promised...but not now.
"I think one of the important points is in my first two seasons at the club, they played in the semi-finals of Champions League and finished second in the Premier League, very close to Manchester United.
"Then we were very, very close to being one of the top teams for a long time because everyone was together and everyone was moving in the right direction.
"But when you let Alonso and Mascherano leave, that is a clear message. It was important, not so much for me, but for the club."