Worked brilliantly. Thank you!
The only thing is the
$redirect_to = 'http://www.mafclubs.com';
wp_safe_redirect( $redirect_to );
exit();
Needs to sit above:
$redirect_to = !empty( $_REQUEST['redirect_to'] ) ? $_REQUEST['redirect_to'] : 'wp-login.php?loggedout=true';
wp_safe_redirect( $redirect_to );
exit();