"If he plays every week for the next two or three months and continues working, I am sure we will see a very, very good player. He can score goals, make key passes and make the difference in games.
"He is fitter now than before, but you need to play games to be more fit," said Benitez. "Maybe he will play tomorrow or this weekend.
"He needs to play as well as possible for us and for himself. He is focused now on training and I am sure that we will see the best of Harry this season.
"I am not the kind of manager that says 'I have given you confidence, now give me something'.
"Harry is a professional and he knows we need to do the best for our supporters, but the most important thing is that he does the best for himself.
"If you like your profession then you must do your best. Harry must be the same, like all our players.
"Some players are looking at the end of the season towards the World Cup, and players like Harry need to do well and do the right things for the future. It is good news for us."