Munich won't happen. It's a Lions home game in Munich, but we play the Lions at home at BOA
Most likely to happen would be Madrid vs the Falcons (although KC has been pushing hard for this one). From a schedule perspective, it would be interesting to have an early November Madrid game (then the bye week), then close out the season at BOA for the 2nd game vs the falcons. In other words, put the two division games in the 2nd half of the season
Paris vs the Saints has long been rumored to be the Browns (but... never say never)
We wouldn't play Munich, Melbourne, Mexico City, London, or Rio based on who those announced home teams happen to be