oddly enough I don't think an Arsenal fan is the person to listen to on the subject of Rooney...
Moyes isn't stupid, he won't sell Rooney to Chelsea unless they make an offer we can't refuse (£50m+ or £35m+player(s))
that's if Rooney actually does go, chances still are he could stay and even play on Sunday if you believe the papers, I think it's interesting he hasn't said anything in public about it yet, I expect it's another situation of him not being 100% happy but at the same time his agent telling him to keep quiet for more money on his next contract or something.