My prediction:
Rams and Goff go on to stink up the place. Sammy remains healthy and underutilized. Pats go on a tear and due to all of their WR injuries make a late season trade to acquire disgruntled Sammy from the Rams for a 5th round pick, because given Goff's struggles, he is worth no more to the Rams and they are not planning on resigning him. Brady and Sammy go on to light up the Bills and knock them out of the playoffs in Week 16, after Bills enter the game 9-5 with a legitimate chance of making the playoffs (W vs Bucs, L vs Raiders, W @ Jets, L vs Saints, W @ Chargers, L @ Chiefs, W vs Pats, W vs Colts, W vs Dolphins) .17 seasons and counting! Pats go on to win Super Bowl. Sammy signs extension. Pats offense fueled by ex-bills well into Brady's 40's. You couldn't dream up this stuff (except, I just did )