In a word we don't know.
First thing to wish for is to win the division. Whatever happens after that happens.
The odds of the Pats NOT WINNING the division are slim. Basically, the Pats win the division at 9-7 as long as they beat MIA and MIA loses one other game.
If the Pats (7-3, 2-0) beat the Jets (3-7, 0-3) in wk-12, the Jets are eliminated from the division race, regardless what else happens.
--- [Pats 8-3, 3-0 ... Jets 3-8, 0-4]
If the Pats get to 8-3, 3-0 by beating the Jets - and then beat the Bills (3-7, 1-1) for a second time in wk-16 - the Bills are eliminated from the division race, regardless what else happens.
--- [Pats: 9 wins ... Bills max = 8 wins]
If the Pats win at least 2 more games (including beating the 'Fins), and the 'Fins lose at least two more games (including losing to the Pats), and the Bills/Jets each lose one more game (to anyone), the Pats win the division.
The 'Fins play @IND (WK-12), Pats (WK-14) and @MIN (WK-15).
The Bills play JAX (WK-12),
@Mia (WK-13), DET (WK-15),
@Pats (WK-16).
The Jets play Pats (WK-12), @TEN (WK-13), HOU (WK-15), GBY (WK-16).