Barcelona defender Araujo has attracted interest from Manchester United and Bayern Munich in recent weeks, owing to the Blaugrana's shaky financial situation.
The Red Devils could lose Varane on a free transfer this summer, and the futures of Harry Maguire, Victor Lindelof and Jonny Evans remain uncertain.
Deco says Araujo will not be sold
Getting a new top-level center-back could be treated as a priority in the summer but Barcelona director Deco has played down exit rumours.
"He is one of Barça's key players of the present and future," Deco said in an interview with Spanish outlet Sport.
"We are not considering selling him, we want him to be happy and this is shown on a day-to-day basis.
"There is nothing to talk about. The important thing is that he is here with hunger and heart."