The guys who I think are either essentially done or too terrible to give a MLB deal to Anderson, Bettis, Bucholz, Chen, Estrada, Hellickson, Holland,Jackson, Miller, Ramirez,Richard.
I would think Walker, Cashner, Chacin, McHugh, Sanchez, Salazar are in the more possible realm and lesser likely but maybe are , Vargas, Cahill, Harvey.
My best guess is Walker. But I would be OK with any of those I suppose.