Stealth Redirection or URL Hiding

so since the news.xxx.com is some blog server somewhere outside my control I wouldnt be able to do this?

when HTTP_REQUEST {
    if { [string tolower [HTTP::uri]] contains "/news"} {
     HTTP::redirect "http://news.xxx.com "
         }
    elseif { [HTTP::header host] eq "news.xxx.com" } {
        HTTP::header replace Host "www.abc.com/news"
    }
}