Complex sentence: Leland offers to drop the idea, but asks Leslie if he could portion off a small amount of the factory to develop toys of his own, asking for Leslie to stay out of the area for fear of his toys may not be good enough.
Split into simpler sentences: Leland offers to drop the idea, but asks Leslie if he can portion off a small amount of the factory to develop toys of his own. He asks Leslie to stay out of the area for fear that his toys may not be good enough.