Shortly after the news came out that the 49ers were going to sign recently released Eagles cornerback Nnamdi Asomugha, 49ers strong safety Donte Whitner made an appearance on NFL Total Access. I don't know if the appearance was pre-planned, but if not it was good timing in light of the addition to the secondary.
Whitner endorsed the Nnamdi signing, but it seemed like he recognized the deal for what it was. Nnamdi is on a prove-it contract following two down years. He could bounce back (Eagles fans don't see it), but he has work to do to prove he can be anywhere near the corner he once was.
Whitner thinks Nnamdi can have success in San Francisco in part because he sees Nnamdi returning to a system similar to when he had success in Oakland. Per Whitner, the 49ers play enough of a press-on man that Nnamdi will be able to utilize his size in covering receivers.
While the 49ers do often drop their corners back at the snap, Nnamdi will likely get his chances to get physical on the line. He automatically is the 49ers biggest cornerback. The team looked at some bigger options, and Nnamdi could bring some additional physicality to this group.
On a side note, I put together a quick video discussing the move. The video above features me calling in, as opposed to face-time. You'll notice the cornerback depth chart discussing left and right cornerbacks. The 49ers obviously utilize their guys in a variety of ways. We simply used their last depth chart to provide the positions listed. It is mostly a place-holder since the 49ers move Rogers inside and Culliver outside in their more frequent nickel.