Replace theme-option.php

Hello,

I want that my child theme replace the file /functions/theme-option.php with my theme-option.php

so in my child-theme folder I created a directory /functions/theme-option.php and then I edited the functions.php in this way :

<?php
/************** Child Script *********/

add_action( 'wp_enqueue_scripts', 'theme_enqueue_styles' );
function theme_enqueue_styles() {
    wp_enqueue_style( 'parent-style', get_template_directory_uri() . '/style.css' );
}

/********** Includes **********/
require_once( get_stylesheet_directory() . '/functions/theme-options.php' );
?>

But unfortunally this give my a cannot_redeclare error.

Can you please help ?