This tree is about 10ft high. I think it is about 2 years old. When i mowed my lawn i just let it grow. It has kind of big leaves.
Here is a close up of the leaves
Could be Morus rubra, the native red mulberry. Definitely worth keeping if there is room for it to grow.
Mulberry is highly likely in Arkansas...they get transplanted everywhere (birds)...whether you like it or not.