With all the criticism going on atm, he'll nearly be forced to sign someone.
If he doesn't sign at least one free agent this off-season, he'll have a crapload of people over him, and I can't see him wanting to go through that after the whole Favre saga.
What I would see him do though, is signing some crappy OT for 1 mil a year, who sits on the bench most of the time, to somewhat please the fans.