Dave Filoni earned Zahn’s trust when the character first appeared in ‘Star Wars: Rebels’.
Timothy Zahn, the creator of Thrawn, expressed his excitement about the new upcoming show ‘Ahsoka’. He trusts Dave Filoni, who introduced the character in ‘Star Wars: Rebels’.
Source from ： https://collider.com/ahsoka-timothy-zahn-thrawn-comments/