Ole Miss head football coach Lane Kiffin overhauled his off-field support staff in the off-season. Kiffin hired Billy Glasscock and Alex Brown as his new General Manager and Director of Player Personnel, respectively. Both positions mostly focus on recruiting, and the pair’s deepest ties/roots are in talent-rich Texas. DJ Mann brings even more Texas flavor. Mann made the jump from high school to the SEC in April. He’s the assistant director to Brown. “It’s definitely a challenge,” Mann said, in a previous one-on-one sit-down with the Ole Miss Spirit. “Being a head coach and coaching at some of…