"He was an icon at Atletico Madrid and had to make a personal decision, one that I respect. There is a different air about him now, and it looks like he is enjoying the experience," said Raul.
"I watched his debut against Aston Villa on television, and I also saw his great goal against Chelsea.
"There can be no doubt that he has taken an important step in the right direction. He gave a lot to Atletico Madrid, and this is a new challenge, though I am sure that he will triumph.
"With a good coach like Rafa Benitez, and with the help of his Spanish team-mates, the process of adaptation will be easier. There is no doubt that he will do well."