Character transfer from US account to EU acco

I've searched, but when I find threads where people want to transfer characters from US to EU servers, they want to do it within one account. This is not what I want, so please bare with me for a sec.

After WOW's release, I had an american GF who wanted to play on american servers. So I did, I got some help from american friends to set up an account and we made a guild and I had a lot of fun. Over time, friends and also family back in Europe started playing the game while my american friends left. My american girlfriend became an ex-girlfriend. I still have my US Wow-account, but there's nothing for me there in terms of friends and so on - I belong on the EU servers really.

Now, I've thought that the solution is easy - I'll just buy a new european account! What I'm not so keen on is losing my main character on the US servers. I would love to have him transferred to my future EU account (should I decide to get one) - and paid character transfer claims account to account transfers are possible, so ..

Would I be able to transfer my main from my US account to my EU account?

I'd gladly pay for a new eu account with all expansions and double the normal fee for the character transfer if it would make this a possibility!