‘Will it be the No. 1 option on the current roster, center Trey Teague? Will it be veteran L.J. Shelton, if the Bills and Arizona Cardinals pull the trigger on a trade for running back Travis Henry? Will a rookie drafted in the second or third round vie for the job? And with Teague entering the last year of his contract, will the Bills take one of the promising centers in the draft. The possibilities are numerous.’