How does picking up a 1 year option ensure you "keep Sammy"?
At some point he is a free agent, what if he doesn't want to play for the Bills? If he doesn't want to play for the Bills in 2017, why would he want to play for them in 2018 and beyond?
This move does NOTHING in terms of the Bills being able to keep Watkins, that's up to him...
5th year option, franchise tag, both of them are hostage scenario's for a player that doesn't want to be here.
If he wants to be here, he will, whether or not this option was picked up.