Times-Pic One position became the "center of attention'' for Saints Coach Sean Payton at Monday's organized team activity. Undrafted rookie free agent center Alex Fletcher of Stanford will be placed on reserve/retired due to medical reasons because of a career-threatening kidney condition, and backup center Nick Leckey underwent ankle surgery to remove bone spurs. The Saints signed former University of Cincinnati center Digger Bujnoch, 6-5, 285, to fill Fletcher's roster spot. Bujnoch last went to training camp with the New York Giants. More on Bujnoch later.