So theoretically it could be
This summer: Falcao goes to Monaco for 60m
Winter: Monaco sells Falcao to Real Madrid for 65-70m
Falcao becomes a free man, Atletico get paid without having to negotiate with Real, Real save about 10-15 million, Monaco get half a season with one of the best strikers in the world to bring them points and exposure, and Falcao is not cup tied so he can play for Real in the Champions League.
It just seems like a lot of extenuating circumstances. My fear is Falcao wasting away 2 or 3 more years without Champions League football when he's already 27.