As for Shanghai,
Air China have said no new routes to Europe in 2015, just increases to existing destinations.
I'd be surprised if China Eastern are interested, they seem very conservative with their routes.
China Southern are CAN based, and, Id say BHX is higher on their radar for them.
That means my money is on a double deal with Hainan. They run Paris-Xi'an, which is non hub to non hub, therefore, MAN-PVG not impossible.