"I think the system will remain mostly intact," McDermott said. "Not having him on film from a starting standpoint, you don't have a complete feel as to what they are going to do offensively with Redman at quarterback from the start, vs. Matt Ryan. So there is going to be a little bit of a feeling out process there, but we're going to prepare as best we can for the system and go from there.
"There is so much of Turner on tape and Matt Ryan on tape that every time we try and show a play, whether it's a specific run or pass, sometimes it's not Snelling and sometimes it's obviously not Matt Ryan, so you have to say, 'Hey, this is a different quarterback that you're going to see.' Then the position coaches have to do a great job of watching tape of Redman the same way, and all the indicators that are there in his game."
Redman, 32, rallied the Falcons past the Tampa Bay Bucs last week, completing 23 of 41 passes for 243 yards and two TDs after Ryan went down with a toe injury. But he also did not play in the NFL between 2003 and 2007, selling insurance for a living after the QB-starved Baltimore Ravens cut him loose following the '03 season; they had drafted Redman in the third round out of Louisville in 2000.
Eagles offensive coordinator Marty Mornhinweg, then with the 49ers, recalled working out Redman before he was drafted.
"He had one of the very best workouts," Mornhinweg said. "He can really throw the football, and it looks good, too. He can drop back to throw with the best of them. I thought highly of him coming out."
McDermott said the Eagles have looked at film of when Redman started four games for Atlanta in 2007, trying to pick up tendencies.