The Spaniard comes off contract in June.
Asked whether his experiences on Tyneside have made him a better coach, Benitez said: "Yes, for sure. Now you are learning and you try to manage sometimes in the same way, sometimes in a different way.
"Now it is easier to watch and analyse games, but still we are doing the same. What does that mean? That football has changed and you have to adapt, so you have to change things.
"You have to learn and I am learning every day. My father was telling me, 'you can do the same job for 30 years and only have one year of experience, or you can change things every year and have 30 years of experience'.
"That is exactly what it has been like for me."