Gafford will start in Thursday's preseason game against the Bucks, Grant Afseth of DallasHoopsJournal.com reports.
Dallas' head coach, Jason Kidd, has been tweaking the lineup constantly in the preseason, and that will be the case again Thursday, with Gafford set to take over at center. Gafford is battling Dereck Lively for the starting role.