Montgomery isn't someone you go five years on. He's not a stuff guy. He's someone I wanted when I thought he could be had for 3, maybe 4 years but he apparently wants a lot more. Dude can pitch, he's tall and left handed and those guys can often buck the norms but he's got a pretty good shot at going Patrick Corbin on someone.
Look at the bright side, Snell will likely be available again next season.