Joselu, a low key signing from Stoke City in the summer , has now scored four goals for United.
When asked if his goal return had been good value so far, Benitez said: “I think in this new world of football now where everything is so expensive, we knew he could score goals, that he could make a contribution, and he's doing that.
“Could he score more goals?
“Yes, but maybe you would have to pay £25million or something like that.
“But he's doing a great job for the team, he is working really hard and scoring some goals, so I am really happy with him."