Banana republic straight leg jeans flap pockets

This pair of the banana republic straight leg jeans has some fraying on the back of the right leg hem, also missing one of its buttons on the back flap. I can replace it with another button but it is not an exact match or take the one from the small front pocket and move it to the back. Please see photos for details. Lying flat measurements: Waist 15 1/4” Front rise 7 3/4” Inseam 31 1/2”