He was pretty awful for us tbh
He's still a decent corner, but he's so far removed from the lock down corner he used to be, its not even funny.
I think there is a good chance this works out well for him. Nnamdi regressed, significantly in fact, but at least some, if not a decent chunk of his issues were down to scheme and coaching. The eagles didnt use him in a way that would best suit his skillset. If Harbough does use him the best way, he should see a productive corner.
The fact there is no guaranteed money makes it a slam dunk, there is literally nothing to lose for the Niners, either he plays well and they pay next to nothing for a pretty good #2 corner. Or he continues to regress and they cut him and pay nothing.
Its a good move for the Niners but he's not the type of player that takes SF over the top.