New Gardener needs advice on seedling
 

I have a lavendar plant growing in a large container in my back garden.

It has grown really well and i have noticed it is dropping seeds into the container.

One of these has taken root at the base of the original plant and begun to grow (now about 7cm tall)

My question is this:

How do i remove the growing seedling from the existing Lavendar plants pot and replant it?...oh and not damage the root of the original plant also.

Thanks

Maple Boy