I dont know if he played 46 of 46,I think he missed a couple games during that stretch.
But, besides that,why would the Bills sign him? They already have several guys who can play center if Morse goes down.
They won't be able to stash him on the Practice Squad....what is his current health status? Will he be able to practice this summer? Then what? Carry him on the 53,tying up a roster spot,in case of emergency?