The politics of a transfer between rival clubs

How can a player move from his beloved club to a local rival, and what are the repercussions and politics surrounding the entire spectacle? In this case, I use the example of if Falcao moved from Atletico to Real Madrid and what uproar it may potentially cause.

With a growing sense that one day, Radamel Falcao will be a Real Madrid player, although entirely speculation and more just a fabrication of hints that Madrid boss, Mourinho has created in interviews in recent times. I instantly thought “Wow”, Falcao becoming a Galactico would be amazing and Madrid would add to their already fearsome frontline. But would a player of Falcao’s obvious talent and ever growing stature in the eyes of the viewing football fans transfer directly to Madrid or would it be a “via” case where he spends a few years at more than likely another top European club then move to Real Madrid where it would still be a huge uproar about his past of playing for Atletico, but not as much as it would kick up a lot of dust if he went straight from one side of Madrid to the other.

Would it be like the Mo Johnson transfer from Celtic to Rangers via Nantes?  During the mid-80’s Mo was a successful player for the Buoys and when he left for France he was offered a route back to Celtic, although, opted to sign for Rangers even though he stated in a press conference he would be going back to Celtic. This led to certain fans deciding not to celebrate his goals when he scored. I think Falcao will become a Madrid player one day, but with the seemingly pending move from Mourinho to Chelsea, it could be the pull of the Premier League which catches arguably, the best number 9 style striker in the world right now.  Admittedly, this entire piece is on speculation of what may or may not happen, but I think every football fan would rather enjoy the naughtiness of him representing Atletico  then moving to Madrid, well, maybe Atletico fans wouldn’t enjoy it, preferably after playing in England for a bit so I can witness him on a regular basis, though.