If the Green Bay Packers (7-6-1) beat Pittsburgh and Detroit (7-7) beats the New York Giants, the Bears (8-6) theoretically would play the Packers for the NFC North title next week, no matter what they do against the Eagles.
Only losses by both Green Bay and Detroit would put Chicago in position to clinch the division with a win over the Eagles.
According to Bears Radio Network's Zach Zaidman, Trestman has hinted than he made indeed rest such starters as quarterback Jay Cutler and receivers Brandon Marshall and Alshon Jeffery if Green Bay and/or Detroit wins.
Eagles fans have debated the same subject, with some saying it would better to sit quarterback Nick Foles, running back LeSean McCoy and others against Chicago to guarantee that they will be healthy for Dallas.
The argument became moot when coach Chip Kelly said he will play his starters against the Bears.
But there is also a tangible reason for the Eagles to want to beat the Bears, even if the Cowboys beat the Washington Redskins earlier in the day.
We know that if both the Eagles and Dallas win or lose this week, the winner next Sunday will win the NFC East.
We know that if Dallas beats Washington and the Eagles lose to Chicago, the winner next Sunday will win the NFC East.
What we haven't discussed is what would happen if the Eagles and Cowboys were to tie next Sunday.
When you factor in the third possible way that a NFL game can end, things became a bit more complicated, and the game against the Bears takes on a whole new level of importance.
When you are talking about making the playoffs, you want to maximize your opportunities.
The game against Chicago matters because a win over the Bears opens two doors to the playoffs for the Eagles, instead of only one.
If Dallas beats Washington to improve to 8-7 and the Eagles beat the Bears to take a 9-6 record into the final game, then a win or a tie will make the Birds the NFC East champions.
If the Eagles beat Dallas, they obviously win the division with a 10-6 record, but if the Eagles tie Dallas, they would finish 9-6-1 and win the NFC East by a half game over the 8-7-1 Cowboys.
On the opposite end, an Eagles loss to Chicago combined with a Dallas win over Washington would switch those two playoff scenarios in favor of the Cowboys.
If the Eagles and Cowboys both finish 8-7-1, Dallas would win the division by virtue of head-to-head record (1-0-1) against the Eagles.
Can you imagine the explosion that would happen with Eagle fans if the Birds gave away the game to Chicago, then tied Dallas and then missed the playoffs because they lost a tiebreaker?
We don't think about NFL ties that often because they are rare, but they have had dramatic effects on the playoffs.
Last season, the San Francisco 49ers won the NFC West in part because of a midseason tie with St. Louis. The 49ers finished with an 11-4-1 record while the Seattle Seahawks were 11-5.
In 2008, the Eagles' season appeared to over when they tied the Cincinnati Bengals to drop to 5-4-1. But the Birds rallied to win four of the final six games.
Having that tie instead of another loss helped keep the Birds in the playoff hunt.
In the last game of the 2008 season, the Eagles took a 9-5-1 record to Dallas, which was 9-6. The Eagles won and made the playoffs as the sixth seed.