Something I've noticed is that GM Jerry Reese makes a point to keep a stud defensive line. They might have been so in 2009 had Osi not come back so poorly from the surgery and Tuck not been hurt in Game Two on a dirty play by Flozell Adams.
Also, Chris Canty being hurt basically all year and not playing until late in the season didn't help.
Bottom line: Osi wants out and the Giants will respond by adding depth.
Te'o-Nesheim impressed at the combine and is slowly creeping up draft boards. His 4.72 40 time will impress most scouts, and his on-field production isn't exactly unworthy of the selection.
He had eight or more sacks in every season he started. Add 3-4 games as per the NFL season and that translates to double digits.
Other Possibilites: Sam Young OT, Rennie Curran, OLB, Jeff Byers OG