"It looks like he is making the right decision," Steiner told Sky Sports News. "He did it when he left McLaren to go to Mercedes, so maybe he got this one right as well.
"But I think for him it's more about the new challenge. He has been at the team for 11 years, won six championships, good relationships there.
"I think it's just the last step of his career he wants a new challenge. And obviously, your last challenge being Ferrari, it's a nice thing to have the opportunity to do."