Ancelotti is a former Juve coach, but experienced a bitter relationship with the Bianconeri support during his time as AC Milan boss.
"Ferrara has quality and will not be overwhelmed by the responsibility of being coach of Juventus," said Ancelotti. "He can handle the expectations there.
"The Brazilians need to settle. They can be crazy (Felipe Melo and Diego).
"Diego needs time to bed down."