Hi John,
I might be understanding you incorrectly. But when I use the code below, the var_dump is returning null.
function acf_reformat_page_link( $value, $post_id, $field ) {
var_dump($field['value']);
return $value;
}
add_filter('acf/format_value/type=page_link', 'acf_reformat_page_link', 15, 3);