Crawley boss Kewell hopes Rashford gets his chance as a centre-forward.
“I don't think Rashford is an out-and-out winger, he's a proper striker," Kewell told the Daily Express.
“I know he likes to drop off at times but if I was playing as a midfielder all I would want to do is get the ball and give it to him.
“I do believe he has the end product. He's still young and wild but that's going to come. He just needs to play and I think he's a fantastic player."