Lucas said: "What he did last year for us and what he is doing already just shows that is why the club wanted to keep him.
"Liverpool want to keep their best players and he was the best player last year - and probably the Premier League's best player.
"We are happy he stayed with us and he is just showing every week how committed he is.
"It doesn't matter what was going on in the summer his mind now is just to help the team, to achieve great things and hopefully it will finish in a positive way in May."
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