the bills have even more "leverage"
let's say that in year 3 Byrd exercises his rights again to NOT sign his tender and not participate in OTA's and minicamp. let's say Byrd intends to sign his tender the week BEFORE the regular season starts, you know, so he doesn't miss any game checks.
just prior to Byrd signing his tender. the Bills could have a change of heart (cough) and decide to RESCIND their franchise tag offer, thereby making Byrd an immediate UFA. maybe the bills had no trading partners. the only problem for Byrd is that most teams will have spent/allocated all their cap space and few if any teams will be in a position to pay him his big contract.