The Eagles actually beat me to this one, announcing on Wednesday that Brian Rolle will be replacing Casey Matthews at weak side linebacker. Rolle did get in on a few snaps last week against the Giants.
Rolle played well in his limited role last week, picking up two tackles and covering Giants fullback Henry Hynoski deep down the field on a similar play that Brandon Jacobs was able to burn Matthews for a 40-yard touchdown reception.
Matthews has struggled in pass coverage and has had no impact against the run. The Eagles tried moving him to weak side linebacker after he struggled at middle linebacker for two weeks but obviously Matthews isn't ready to be a starting linebacker in this league quite yet.
The obvious criticism of Brian Rolle is that he is too small to be an every down linebacker, but he is actually only a few pounds lighter than Matthews. Rolle is short for a linebacker, standing at just 5'10", but that almost works in his favor. He plays with a major chip on his shoulder due to his height and it shows on the football field.
He is also very strong for an undersized outside linebacker. He finished fourth in the 2011 NFL Combine in the bench press, benching 225 pounds 28 times. That's 15 more reps than Matthews had in the same combine. He demonstrated that strength in Week 1 against the Rams when he blew up Rams center Jason Brown on a running play.
He doesn't have more experience than Matthews, as both are rookies, but he brings a lot more speed and intensity on defense. If he can cover backs and make tackles, this is a great move regardless of anything else.
It is also worth noting that the Eagles have replaced Kurt Coleman with Nate Allen. This is a sign that Allen's knee is close to 100 percent. Coleman missed several tackles last week against the Giants and had just seven total tackles through the first three games.