You can get_post(), check if the get_current_user_id equals the post_author information, and then act upon that...
$post_idif =('edit.php' YOUR-ID-HERE;=== $GLOBALS['pagenow']) { if ( current_user_can('administrator') || get_post($post_idfilter_input(INPUT_POST, 'post_id'))->post_author == get_current_user_id() ) { // Yes, you can } else { wp_redirect(admin_url()); exit; } }