Five years 25 Million! Wow that seems like a lot for him. Walker is a good pass rusher, especially thriving against weaker offensive lines, but can struggle against premiere guards. Darwin has always been a huge liability against the run, and I think that is why he is better suited to be a situational pass rusher, and not a starter.
Knowing the Eagles luck, he will have three sacks when they play the Bears.
I wonder what Marv Levy thinks about this.