Logout redirect - can you use wildcards

Just wondered... using multisite and wanting to redirect ALL sites (now and created) to their own home page...
Can you use wildcards in the logout redirect field (or the %field% wordpress fields)?
And could you point me at syntax.

I want bob.wlol.co.uk and john.wlol.co.uk to be redirected to *.wlol.co.uk/home/

Oh - and can I do these redirects better in a different way? (as I'm using BP, Membership, Pro-sites, Ultimate Branding and Easyblogging)
Thanks
Mike