Some pundits thought the Ivorian's arrival would cloud De Jong's chances.
But the duo are operating in the same midfield and the Dutchman believes their partnership will flourish.
He told the Sunday Mirror: "I see Yaya more as a central midfield player than a defensive midfield player. He has an attacking mind. I think together we can form a great partnership in midfield. It will be like a strong block.
"Besides, I have always been a regular player in the first team and I expect that will stay like that."