Shape transition reveal

Hey folks,

I'm struggling with a brief logo animation for a client. It's based off of a template from Motion Array. The animation shows a multitude of concentric circles that start from nothing in the center of the screen, then gradually expand outward as some other basic shapes move around inside them.

Essentially what I'm trying to do is to use one of these expanding circles as a transition from a solid background to a background with no fill so that upon export, the template can be used in future videos to reveal the first frame of the following video. Here's a still toward the end of the template:

What I'm hoping to do is to make a shape like this large blue circle that will show the white background outside, but as it expands the interior will have no fill, revealing a .jpg beneath all the shape layers. Is this possible?

Thanks in advance for your wisdom!