Because Foles knows exactly how this offense is supposed to operate.
Prior to the 2019 season, his last 18 games had come with either Andy Reid or Doug Pedersen calling the shots. In the 14 games in which he threw more than 15 passes, he completed nearly 68 percent of them for 3,661 yards, 24 touchdowns, 9 interceptions and a passer rating of 97.2.
Those aren’t regular season MVP numbers, but with the Bears defense, they’d get the job done.
(And it shouldn’t be forgotten that five of those games came in the playoffs, including two against what were considered to be the league’s top defenses in those given seasons.