What you will see is the Eagles play a John Pease style defense. They will try to get pressure with their front four and drop 7, with a mix of man vs zone. The key will be getting to Brady before he can pick you apart. They will try to not give up the big play and make Brady beat them with 10 play drives.
On offense, Philly will run the ball when NE is in a nickle defense. If they can be successful doing that, they will then play action off that and go to a more sideline to sideline passing offense (much like Chip Kelly, ironically). Look at the front seven of NE to see what Philly will run.
When NE is in a 4-3, look for Philly to do quick passes, RPO, and put stress on the edges and Philly has a HUGE advantage with their TE’s and slot recievers. NE will start in a Nickle front seven to try to counter attack that advantage.
That is where Philly will run the ball and try to force NE to bring in an extra LB. When that happens, Philly will attack.