Redirction loop with SquidGuard rewrite option

[networkinggeek]

I was just working on the rewrite option in SquidGuard where I tried to rewrite the URL from the domain to its sub-domain i.e
http://www.youtube.com/ to http://www.youtube.com/channel/xxxxxxxxxx. The web-page encountered the redirect loop because of this rewrite.
Is it because I am trying to rewrite it to its own sub-domain or is their any other possibility? :-\ ???