Now visiting Statesboro, Dr. Carl Anthony Stockton, provost of the University of Houston-Clear Lake in Texas, is the third identified of five candidates for the job of president of Georgia Southern University invited to speak here. Stockton is scheduled to speak and answer questions at an open forum 4 p.m. Thursday in the Carol A. Carter Recital Hall, inside the Foy Building on the GSU campus. Meanwhile, Dr. David A. Brennen, dean of the University of Kentucky College of Law, was to speak in the same location at 4 p.m. Wednesday.