OK, let's say United are willing to pay an astronomical price for Torres and that Torres himself is willing to move (I doubt both, especially the latter) - still the Yanks who own the Merseyside club will need to consider the following:
- If they, on top of postponing the promises of a brand new stadium and loading debt onto Liverpool FC, agree to sell their biggest star player and possibly the most popular man in Liverpool - to Manchester United - could they ever set foot near Anfield again? Their popularity in Liverpool isn't much bigger than a certain Glazer's in Manchester, and selling Torres to the biggest rival would be the worst move they could do to improve on that. I'm sure they would check whether other big clubs like Milan (or even Chelsea) were interested.
I must add, I don't know why I spend time on debunking a rumor of Torres to Untied. Absurd rumors are going to be there until the transfer window closes in August, we'll just have to live with them.