The short answer to that question is, I have no idea.
Henderson, a defensive end from Southern Mississippi, was the Giants' final draft pick -- taken in the sixth round (199th overall).
By most accounts, the 6-foot-3, 280-pound Henderson is a marginal NFL prospect.
We also know, of course, that the Giants are loaded at defensive end. With Michael Strahan (we count him until/unless he says he will retire -- and I don't think he will), Osi Umenyiora, Justin Tuck, Dave Tollefson and the ability to use Mathias Kiwanuka at end if they need to, I have no idea what Henderson can do for this team.
I guess we will just have to wait until training camp and find out.