Options I see:
1. Play on Monday or Tuesday, pushing Bills-Chiefs to Saturday night or Sunday
2. Create a Week 18 and play then
3. Suspend with indefinite "TBD" designation and see what other games get this same designation throughout year
4. Cancel outright, no forfeit
5. Forfeit (very unlikely)
Options 1, 2, and 4 are unfair to the Bills.
Option 5 is unfair to other teams.
Therefore, I predict it will be option 3, minimizing immediate impact and waiting until we see what other games are similarly affected throughout the year. Of course, it could be argued that this is unfair to the Bills because they might have to play the Titans at full strength later rather than in a very weakened state now.
As for paychecks if the game is canceled, I bet the Bills find a way to pay the players. Not their fault.