"Robbie is a great player. There has been a lot of talk about whether he will be with us next season but he is doing his job very well," said the Spanish international.
"As a finisher, he is an absolute killer inside the penalty area. What sets him apart is the way he takes advantage of half chances when the ball is loose. He is lethal when that happens.
"Robbie has created an excellent atmosphere in the dressing room. He's a very opinionated man and he's very, very funny. Robbie definitely represents the great sense of humour that Liverpudlians are famous for!"