Please identify this shrub as I do not know what it is
This shrub or tree will be large and is growing much too close to your fence to allow it to grow in-place. I suggest you remove it. If you want to grow it in a pot for a year or two and get a positive identification, you can. Growing in a pot keeps the roots contained, allowing for easy removal if undesirable, or correct placement in your landscape should it prove to be one you want to keep.