Benitez said: "Christian Purslow made it very clear that when I signed a new contract for five years it was so that I would be at this club for a very long time.
"Now I can control the Academy, I can control the young players we produce and build something very good for the future. We have analysed the squad together, looking at plans for January and also next season.
"My belief is that we will qualify for the knockout stages of the Champions League, but of course, you have to have plans based on whether you have more money or less money available.
"The more money you have, the easier it is. If you have less money then you have to manage in a different way and find other solutions to improve."