Four-time F1 champion Prost is also unsure whether Hamilton’s move to Ferrari will yield positive results.
“I can understand his decision because obviously when you are in a team like Mercedes, when they did not win a race for two years and they are really struggling to go back to the front, and at his age he has said, ‘Okay, why not try something different’,” he commented to Sports Illustrated.
“The question is, is it a good move? Is it going to be a good choice? Also, for Ferrari, you could ask the question.
“It’s good for the sport because everybody's going to watch. You could have an idea, but the idea or the perception you could have today is going to be different next year at the same stage, because he will be one year older and will he find his motivation back being at Ferrari?
“It is possible because if it's for a short time, maybe only one year, if Ferrari is going well, I think he could find the motivation back. The relation with Charles [Leclerc], you know, the ambience at Ferrari is also [important].
"[He has had] such a long period with an English team, Mercedes, with a way of working and then you go to an Italian team, especially with the different pressure, different way of thinking, he is under pressure from the media. I think it's not that easy.”