"We are really pleased because we've signed a really good player, an England international," said Benitez.
"It's very positive. He has quality and a very good mentality, and from the first time I spoke with him it was clear he wanted to come here.
"He has quality, that's clear. He's more mature - you can see from the press conference he is good.
"Chelsea were trying to win big trophies at the time he was there and they needed experience in order to win. Now it is a good moment because he is a much better player, he has the experience and the desire."
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