I don't really know what the % refers to (I'm assuming it's who wants him here?) but regardless..that's hardly a small proportion is it?
I'm not saying you're all overreacting, there's just as many United fans getting their knickers in a twist about nothing as well. It's more embarrassing on our side, the lack of loyalty and trust shown from our fans. Happened with Vidic just last year too, people have never gotten over Ronaldo(and Tevez) 'betraying' us.
I can't believe anyone seriously believes there's a better player than Rooney in your team, though. It'd be ridiculous how quickly opinions on here would change if he did move! Cringeworthingly so.