‘Here’s how it works: The Bills simply need to submit a contract offer, also known as a “tender,” to that player for the minimum one-year salary for how many accrued years he will have in the league in 2018. The player doesn’t even have to sign that offer. It simply has to be formally submitted to him for the Bills to retain his rights through next season. Then no other team has any available avenues to sign that player to a contract or even an offer sheet.’